Remove unnecessary parentheses around return values in functions

This patch was generated by the following Perl code:

perl -i -pe 's/([^_])return\s*\(\s*([^(]+?)\s*\)s*;(\s+(\n))?/$1return $2;$4/g;'

Signed-off-by: Mikhail Gusarov <dottedmag@dottedmag.net>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Keith Packard <keithp@keithp.com>

hw/xquartz/mach-startup/bundle-main.c

@@ -641,7 +641,7 @@ static int execute(const char *command) {
 
     execvp (newargv[0], (char * const *) newargv);
     perror ("X11.app: Couldn't exec.");
-    return(1);
+    return 1;
 }
 
 static char *command_from_prefs(const char *key, const char *default_value) {