Fix #4789: Group admins cannot see disabled users

Author: Neraste

settings/Controller/UsersController.php

@@ -339,16 +339,16 @@ public function index($offset = 0, $limit = 10, $gid = '', $pattern = '', $backe
 
 			// Batch all groups the user is subadmin of when a group is specified
 			$batch = [];
-			if ($gid === '') {
+			if ($gid !== '' && $gid !== '_disabledUsers' && $gid !== '_everyone') {
+				$batch = $this->groupManager->displayNamesInGroup($gid, $pattern, $limit, $offset);
+			} else {
 				foreach ($subAdminOfGroups as $group) {
 					$groupUsers = $this->groupManager->displayNamesInGroup($group, $pattern, $limit, $offset);
 
 					foreach ($groupUsers as $uid => $displayName) {
 						$batch[$uid] = $displayName;
 					}
 				}
-			} else {
-				$batch = $this->groupManager->displayNamesInGroup($gid, $pattern, $limit, $offset);
 			}
 			$batch = $this->getUsersForUID($batch);