Ticket #35428: ms-functions.php.3.patch

wp-includes/ms-functions.php

@@ -969 +969 @@
 
         $user_id = username_exists($signup->user_login);
 
-        if ( ! $user_id )
-                $user_id = wpmu_create_user($signup->user_login, $password, $signup->user_email);
-        else
-                $user_already_exists = true;
+        if ( ! $user_id ) {
+                $user_id = wpmu_create_user( $signup->user_login, $password, $signup->user_email );
+        } else {
+                /**
+                 * allow the suppression of errors if user already exists.
+                 *
+                 * @since 4.5
+                 *
+                 * @param WP_Error
+                 */
+                $user_already_exists = apply_filters( '_wpmu_activate_existing_error_', true, $signup );
+        }
 
         if ( ! $user_id )
                 return new WP_Error('create_user', __('Could not create user'), $signup);