Properly load permissions in showActions

When setViewerMode(false) is called, the permissions should be fetched from the available dirInfo

Signed-off-by: Julius Härtl <jus@bitgrid.net>

apps/files/js/filelist.js

@@ -1803,7 +1803,7 @@
 		 * @return permission value as integer
 		 */
 		getDirectoryPermissions: function() {
-			return parseInt(this.$el.find('#permissions').val(), 10);
+			return this && this.dirInfo && this.dirInfo.permissions ? this.dirInfo.permissions : parseInt(this.$el.find('#permissions').val(), 10);
 		},
 		/**
 		 * Changes the current directory and reload the file list.