Move on with the next user if we found the user on one user back-end

Signed-off-by: Bjoern Schiessle <bjoern@schiessle.org>

lib/private/User/Manager.php

@@ -478,6 +478,7 @@ class Manager extends PublicEmitter implements IUserManager {
 						if ($return === false) {
 							return;
 						}
+						break;
 					}
 				}
 			}
@@ -488,7 +489,7 @@ class Manager extends PublicEmitter implements IUserManager {
 	 * Getting all userIds that have a listLogin value requires checking the
 	 * value in php because on oracle you cannot use a clob in a where clause,
 	 * preventing us from doing a not null or length(value) > 0 check.
-	 * 
+	 *
 	 * @param int $limit
 	 * @param int $offset
 	 * @return string[] with user ids