fix typo in variable name, mew->new

includes/ore_app.php

@@ -604,7 +604,7 @@ class OREMain extends OREBase {
         // "email already in use" error.
         if ($new_email != $current_email) {
             $userdata['user_email'] = $new_email;
-            do_action('ore_update_user_email', $mew_email, $current_email);
+            do_action('ore_update_user_email', $new_email, $current_email);
         }
         $old_user = get_user_by('id', $user_id);
         $old_user_meta = get_user_meta($user_id);