Stop using TRUE and FALSE for exit status.

miscutils/mktemp.c

@@ -31,7 +31,7 @@ extern int mktemp_main(int argc, char **argv)
 	if (argc != 2 && (argc != 3 || strcmp(argv[1], "-q")))
 		usage(mktemp_usage);
 	if(mkstemp(argv[argc-1]) < 0)
-		exit(FALSE);
+		return EXIT_FAILURE;
 	(void) puts(argv[argc-1]);
-	return(TRUE);
+	return EXIT_SUCCESS;
 }