After writing a file in copyr the folder size shall be corrected - th…

…is is necessary for objectstore acceptance tests

lib/private/legacy/util.php

@@ -437,6 +437,15 @@ public static function copyr($source, \OCP\Files\Folder $target) {
 					}
 					$child = $target->newFile($file);
 					\stream_copy_to_stream($sourceFileHandle, $child->fopen('w'));
+					\fclose($child);
+					\fclose($sourceFileHandle);
+
+					// update cache sizes
+					$cache = $target->getStorage()->getCache();
+					if ($cache instanceof \OC\Files\Cache\Cache) {
+						$cache->correctFolderSize($child->getInternalPath());
+					}
+
 				}
 			}
 		}