Fix login handler for file cache - fixes #16795

lib/base.php

@@ -729,7 +729,10 @@ class OC {
 
 			// NOTE: This will be replaced to use OCP
 			$userSession = self::$server->getUserSession();
-			$userSession->listen('postLogin', '\OC\Cache\File', 'loginListener');
+			$userSession->listen('\OC\User', 'postLogin', function () {
+				$cache = new \OC\Cache\File();
+				$cache->gc();
+			});
 		}
 	}
 

lib/private/cache/file.php

@@ -166,9 +166,4 @@ class File {
 			}
 		}
 	}
-
-	public static function loginListener() {
-		$c = new self();
-		$c->gc();
-	}
 }