checksrc: fix SPACEBEFOREPAREN for conditions starting with "*"

The open paren check wants to warn for spaces before open parenthesis
for if/while/for but also for any function call. In order to avoid
catching function pointer declarations, the logic allows a space if the
first character after the open parenthesis is an asterisk.

I also spotted what we did not include "switch" in the check but we should.

This check is a little lame, but we reduce this problem by not allowing
that space for if/while/for/switch.

Reported-by: Emanuele Torre
Closes #11044

src/tool_writeout_json.c

@@ -61,7 +61,7 @@ void jsonWriteString(FILE *stream, const char *in, bool lowercase)
       fputs("\\t", stream);
       break;
     default:
-      if (*i < 32) {
+      if(*i < 32) {
         fprintf(stream, "u%04x", *i);
       }
       else {