Regression: fix pw usermod -d

Mark the user has having been edited if -d option is passed to usermod and
so the request change of home directory actually happen

PR:		203052
Reported by:	lenzi.sergio@gmail.com
MFC after:	2 days

usr.sbin/pw/pw_user.c

@@ -1694,6 +1694,7 @@ pw_user_mod(int argc, char **argv, char *arg1)
 
 	if (homedir && strcmp(pwd->pw_dir, homedir) != 0) {
 		pwd->pw_dir = homedir;
+		edited = true;
 		if (fstatat(conf.rootfd, pwd->pw_dir, &st, 0) == -1) {
 			if (!createhome)
 				warnx("WARNING: home `%s' does not exist",