Patch from Vladimir N. Oleynik to save 128 bytes by moving error

checking for some my_* functions to utility.c

coreutils/id.c

@@ -76,9 +76,6 @@ extern int id_main(int argc, char **argv)
 
 	pwnam=my_getpwnam(user);
 	grnam=my_getgrnam(group);
-	if (gid == -1 || pwnam==-1 || grnam==-1) {
-		error_msg_and_die("%s: No such user", user);
-	}
 
 	if (no_group) {
 		if(name_not_number && user)