Fixed file actions fallback

Some apps are calling FileActions.display() directly but omit the new
fileList argument.

This fix makes the fileList argument correctly fall back to the default
file list (the one from the "All files" section)

apps/files/js/fileactions.js

@@ -133,6 +133,8 @@
 		display: function (parent, triggerEvent, fileList) {
 			if (!fileList) {
 				console.warn('FileActions.display() MUST be called with a OCA.Files.FileList instance');
+				// using default list instead, which could be wrong
+				fileList = OCA.Files.App.fileList;
 			}
 			this.currentFile = parent;
 			var self = this;
@@ -162,7 +164,7 @@
 
 				event.data.actionFunc(file, {
 					$file: $tr,
-					fileList: fileList || OCA.Files.App.fileList,
+					fileList: fileList,
 					fileActions: self,
 					dir: $tr.attr('data-path') || fileList.getCurrentDirectory()
 				});