Merge pull request r0x0r#1191 from p4bl0-/fix-gtk-save-dialog-returned-filename

Fix issue r0x0r#1177

Author: r0x0r

webview/platforms/gtk.py

@@ -401,7 +401,7 @@ def create_file_dialog(self, dialog_type, directory, allow_multiple, save_filena
 
         if response == gtk.ResponseType.OK:
             if dialog_type == SAVE_DIALOG:
-                file_name = dialog.get_filename()
+                file_name = (dialog.get_filename(),)
             else:
                 file_name = dialog.get_filenames()
         else: