tidy-up: miscellaneous

- avoid "will" in builds scripts, scripts folder, curl_easy_ssls_export.md,
  and few other files.
- badwords: add "initialise", "nul terminated", "thread safety" and
  variations.
- prefer "null-terminat", where missing (two places).
- fix "null-terminat*" missing dash.
- hostip: merge two `#if` blocks.
- tool_doswin: fix comment
  Spotted by GitHub Code Quality
  Follow-up to 9a2663322c #17572
- fix stray spaces and newlines.

Closes #21638

scripts/mk-ca-bundle.pl

@@ -153,7 +153,7 @@ sub warning_message() {
         print "  3. certdata.txt file format may change, lag time to update this script\n";
         print "  4. Generally unwise to blindly trust CAs without manual review & verification\n";
         print "  5. Mozilla apps use additional security checks are not represented in certdata\n";
-        print "  6. Use of this script will make a security engineer grind his teeth and\n";
+        print "  6. Use of this script makes a security engineer grind his teeth and\n";
         print "     swear at you.  ;)\n";
         exit;
     } else { # Short Form Warning
@@ -228,7 +228,7 @@ sub parse_csv_param($$@) {
 
     if(scalar(@invalid) > 0) {
         # Tell the user which parameters were invalid and print the standard help
-        # message which will exit
+        # message which also exits
         print "Error: Invalid ", $description, scalar(@invalid) == 1 ? ": " : "s: ", join(", ", map { "\"$_\"" } @invalid), "\n";
         HELP_MESSAGE();
     }