clang-tidy: add missing and delete redundant parentheses

Reported by clang-tidy v22.1.0.

Ref: https://releases.llvm.org/22.1.0/tools/clang/tools/extra/docs/ReleaseNotes.html

Closes #20749

lib/memdebug.c

@@ -219,7 +219,7 @@ void *curl_dbg_malloc(size_t wantedsize, int line, const char *source)
   /* alloc at least 64 bytes */
   size = sizeof(struct memdebug) + wantedsize;
 
-  mem = (Curl_cmalloc)(size);
+  mem = Curl_cmalloc(size);
   if(mem) {
     mem->size = wantedsize;
   }
@@ -249,7 +249,7 @@ void *curl_dbg_calloc(size_t wanted_elements, size_t wanted_size,
   user_size = wanted_size * wanted_elements;
   size = sizeof(struct memdebug) + user_size;
 
-  mem = (Curl_ccalloc)(1, size);
+  mem = Curl_ccalloc(1, size);
   if(mem)
     mem->size = user_size;
 
@@ -344,7 +344,7 @@ void *curl_dbg_realloc(void *ptr, size_t wantedsize,
 #  pragma warning(pop)
 #endif
 
-  mem = (Curl_crealloc)(mem, size);
+  mem = Curl_crealloc(mem, size);
   if(source)
     curl_dbg_log_locked("MEM %s:%d realloc(%p, %zu) = %p\n",
                         source, line, (void *)ptr, wantedsize,
@@ -380,7 +380,7 @@ void curl_dbg_free(void *ptr, int line, const char *source)
 #endif
 
     /* free for real */
-    (Curl_cfree)(mem);
+    Curl_cfree(mem);
   }
 }
 

lib/mime.c

@@ -423,7 +423,7 @@ static curl_off_t encoder_base64_size(curl_mimepart *part)
     return size;    /* Unknown size or no data. */
 
   /* Compute base64 character count. */
-  size = 4 * (1 + (size - 1) / 3);
+  size = 4 * (1 + ((size - 1) / 3));
 
   /* Effective character count must include CRLFs. */
   return size + (2 * ((size - 1) / MAX_ENCODED_LINE_LENGTH));

lib/mprintf.c

@@ -676,9 +676,10 @@ static bool out_double(void *userp,
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
 #endif
+  /* !checksrc! disable BANNEDFUNC 1 */
   /* !checksrc! disable LONGLINE */
   /* NOLINTNEXTLINE(clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling) */
-  (snprintf)(work, BUFFSIZE, formatbuf, dnum);
+  snprintf(work, BUFFSIZE, formatbuf, dnum);
 #if defined(__GNUC__) || defined(__clang__)
 #pragma GCC diagnostic pop
 #endif

lib/parsedate.c

@@ -422,7 +422,7 @@ static int parsedate(const char *date, time_t *output)
            (num_digits == 4) &&
            (val <= 1400) &&
            (indate < date) &&
-           ((date[-1] == '+' || date[-1] == '-'))) {
+           (date[-1] == '+' || date[-1] == '-')) {
           /* four digits and a value less than or equal to 1400 (to take into
              account all sorts of funny time zone diffs) and it is preceded
              with a plus or minus. This is a time zone indication. 1400 is
@@ -432,7 +432,7 @@ static int parsedate(const char *date, time_t *output)
              anyone has a more authoritative source for the exact maximum time
              zone offsets, please speak up! */
           found = TRUE;
-          tzoff = (val / 100 * 60 + val % 100) * 60;
+          tzoff = ((val / 100 * 60) + (val % 100)) * 60;
 
           /* the + and - prefix indicates the local time compared to GMT,
              this we need their reversed math to get what we want */

lib/tftp.c

@@ -486,7 +486,7 @@ static CURLcode tftp_tx(struct tftp_conn *state, tftp_event_t event)
     break;
 
   default:
-    failf(data, "tftp_tx: internal error, event: %i", (int)(event));
+    failf(data, "tftp_tx: internal error, event: %i", (int)event);
     break;
   }
 

lib/transfer.c

@@ -870,8 +870,8 @@ CURLcode Curl_xfer_send_close(struct Curl_easy *data)
 
 bool Curl_xfer_is_blocked(struct Curl_easy *data)
 {
-  bool want_send = ((data)->req.keepon & KEEP_SEND);
-  bool want_recv = ((data)->req.keepon & KEEP_RECV);
+  bool want_send = (data->req.keepon & KEEP_SEND);
+  bool want_recv = (data->req.keepon & KEEP_RECV);
   if(!want_send)
     return want_recv && Curl_xfer_recv_is_paused(data);
   else if(!want_recv)