(main): Protect invocation of setlocale by ifdef.

src/tar.c

@@ -1621,6 +1621,7 @@ main (int argc, char **argv)
 {
   set_start_time ();
   program_name = argv[0];
+
   setlocale (LC_ALL, "");
   bindtextdomain (PACKAGE, LOCALEDIR);
   textdomain (PACKAGE);