tidy-up: miscellaneous

- vms/curlmsg_vms.h: delete unused/commented code.
- vtls/schannel_verify: sort includes.
- typecheck-gcc.h: fix indent and alignment.
- lib/config-win32.h: drop idle `#undef`.
- spacecheck: check for stray empty lines before after curly braces.
- make literals more readable: 1048576 -> 1024 * 1024
- scope variables.
- use ISO date in a comment.
- drop redundant parentheses.
- drop empty comments.
- unfold lines.
- duplicate/stray spaces in comments.
- fix indent, whitespace, minor typos.

Closes #20690

src/tool_doswin.c

@@ -185,12 +185,12 @@ static SANITIZEcode msdosify(char ** const sanitized, const char *file_name,
          and a filename cannot have more than a single dot. We leave the
          first non-leading dot alone, unless it comes too close to the
          beginning of the name: we want sh.lex.c to become sh_lex.c, not
-         sh.lex-c.  */
+         sh.lex-c. */
       else if(*s == '.') {
         if((flags & SANITIZE_ALLOW_PATH) && idx == 0 &&
            (s[1] == '/' || s[1] == '\\' ||
             (s[1] == '.' && (s[2] == '/' || s[2] == '\\')))) {
-          /* Copy "./" and "../" verbatim.  */
+          /* Copy "./" and "../" verbatim. */
           *d++ = *s++;
           if(d == dlimit)
             break;
@@ -225,7 +225,7 @@ static SANITIZEcode msdosify(char ** const sanitized, const char *file_name,
           *d = 'x';
         }
         else {
-          /* libg++ etc.  */
+          /* libg++ etc. */
           if(dlimit - d < 4) {
             *d++ = 'x';
             if(d == dlimit)
@@ -326,7 +326,7 @@ static SANITIZEcode rename_if_reserved_dos(char ** const sanitized,
      Examples: CON => _CON, CON.EXT => CON_EXT, CON:ADS => CON_ADS
      https://web.archive.org/web/20160314141551/support.microsoft.com/en-us/kb/74496
      https://learn.microsoft.com/windows/win32/fileio/naming-a-file
-     */
+   */
   for(p = buffer; p; p = (p == buffer && buffer != base ? base : NULL)) {
     size_t p_len;
     int x = (curl_strnequal(p, "CON", 3) ||

src/tool_getparam.c

@@ -456,7 +456,7 @@ UNITTEST ParameterError parse_cert_parameter(const char *cert_parameter,
 #ifdef _WIN32
       if((param_place == &cert_parameter[1]) &&
          (cert_parameter[2] == '\\' || cert_parameter[2] == '/') &&
-         (ISALPHA(cert_parameter[0]))) {
+         ISALPHA(cert_parameter[0])) {
         /* colon in the second column, followed by a backslash, and the
            first character is an alphabetic letter:
 
@@ -559,7 +559,7 @@ static const struct sizeunit *getunit(char unit)
    We support P, T, G, M and K (case insensitive) suffixes.
 
    Unit test 1623
-  */
+ */
 UNITTEST ParameterError GetSizeParameter(const char *arg, curl_off_t *out)
 {
   const char *unit = arg;
@@ -1016,7 +1016,7 @@ static ParameterError set_rate(const char *nextarg)
      /m == per minute
      /h == per hour (default)
      /d == per day (24 hours)
-  */
+   */
   ParameterError err = PARAM_OK;
   const char *p = nextarg;
   curl_off_t denominator;
@@ -1256,7 +1256,7 @@ static ParameterError parse_ech(struct OperationConfig *config,
         warnf("Could not read file \"%s\" "
               "specified for \"--ech ecl:\" option",
               nextarg);
-        return PARAM_BAD_USE; /*  */
+        return PARAM_BAD_USE;
       }
       err = file2string(&tmpcfg, file);
       if(file != stdin)
@@ -2791,7 +2791,7 @@ static ParameterError opt_string(struct OperationConfig *config,
     /* use <eth0> or <192.168.10.10> style addresses. Anything except
        this will make us try to get the "default" address.
        NOTE: this is a changed behavior since the released 4.1!
-    */
+     */
     err = getstr(&config->ftpport, nextarg, DENY_BLANK);
     break;
   case C_FTP_SSL_CCC_MODE: /* --ftp-ssl-ccc-mode */
@@ -2809,11 +2809,11 @@ static ParameterError opt_string(struct OperationConfig *config,
     err = add2list(&config->telnet_options, nextarg);
     break;
   case C_USER: /* --user */
-    /* user:password  */
+    /* user:password */
     err = getstr(&config->userpwd, nextarg, ALLOW_BLANK);
     break;
   case C_PROXY_USER: /* --proxy-user */
-    /* Proxy user:password  */
+    /* Proxy user:password */
     err = getstr(&config->proxyuserpwd, nextarg, ALLOW_BLANK);
     break;
   case C_WRITE_OUT: /* --write-out */

src/tool_parsecfg.c

@@ -209,7 +209,8 @@ ParameterError parseconfig(const char *filename, int max_recursive,
       }
 
 #ifdef DEBUG_CONFIG
-      curl_mfprintf(tool_stderr, "PARAM: \"%s\"\n",(param ? param : "(null)"));
+      curl_mfprintf(tool_stderr, "PARAM: \"%s\"\n",
+                    (param ? param : "(null)"));
 #endif
       res = getparameter(option, param, &usedarg, config, max_recursive);
       config = global->last;

src/tool_urlglob.c

@@ -93,7 +93,7 @@ static CURLcode glob_set(struct URLGlob *glob, const char **patternp,
 {
   /* processes a set expression with the point behind the opening '{'
      ','-separated elements are collected until the next closing '}'
-  */
+   */
   struct URLPattern *pat;
   bool done = FALSE;
   const char *pattern = *patternp;
@@ -217,7 +217,7 @@ static CURLcode glob_range(struct URLGlob *glob, const char **patternp,
      - num range: e.g. "0-9]", "17-2000]"
      - num range with leading zeros: e.g. "001-999]"
      expression is checked for well-formedness and collected until the next ']'
-  */
+   */
   struct URLPattern *pat;
   const char *pattern = *patternp;
   const char *c;
@@ -460,7 +460,7 @@ static CURLcode glob_parse(struct URLGlob *glob, const char *pattern,
       curlx_dyn_reset(&glob->buf);
     }
     else {
-      if(!*pattern) /* done  */
+      if(!*pattern) /* done */
         break;
       else if(*pattern == '{') {
         /* process set pattern */

src/tool_vms.c

@@ -97,7 +97,7 @@ void vms_special_exit(int code, int vms_show)
 #endif
 
   if(code > CURL_LAST) {   /* If CURL_LAST exceeded then */
-    vms_code = CURL_LAST;  /* curlmsg.h is out of sync.  */
+    vms_code = CURL_LAST;  /* curlmsg.h is out of sync. */
   }
   else {
     vms_code = vms_cond[code] | vms_show;