[openload] added test for determine_ext and determining file extension was simplified

test/test_utils.py

@@ -360,6 +360,7 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(determine_ext('http://example.com/foo/bar.nonext/?download', None), None)
         self.assertEqual(determine_ext('http://example.com/foo/bar/mp4?download', None), None)
         self.assertEqual(determine_ext('http://example.com/foo/bar.m3u8//?download'), 'm3u8')
+        self.assertEqual(determine_ext('foobar', None), None)
 
     def test_find_xpath_attr(self):
         testxml = '''<root>

youtube_dl/extractor/openload.py

@@ -361,9 +361,7 @@ class OpenloadIE(InfoExtractor):
         # Some videos have special name and some of these
         # have not got their extension on their title
         # If url has their file name, it has always its extension
-        video_ext = determine_ext(title, None)
-        if video_ext is None:
-            video_ext = determine_ext(url, 'mp4')
+        video_ext = determine_ext(title, None) or determine_ext(url, 'mp4')
 
         info_dict = {
             'id': video_id,