Fixes #4112 get_user_by_username() returns false if no user

diff --git a/engine/lib/users.php b/engine/lib/users.php
index 9cb8ddfa72519a9dbbaaec82e9d1d720ae016d6a..29fa4db2fd3df124ef4c43c7efc81505acd7e7c7 100644 (file)
--- a/engine/lib/users.php
+++ b/engine/lib/users.php
@@ -565,6 +565,8 @@ function get_user_by_username($username) {
        $entity = get_data_row($query, 'entity_row_to_elggstar');
        if ($entity) {
                $USERNAME_TO_GUID_MAP_CACHE[$username] = $entity->guid;
+       } else {
+               $entity = false;
        }
 
        return $entity;