fix increment operator

diff --git a/youtube_dl/extractor/eighttracks.py b/youtube_dl/extractor/eighttracks.py
index 101a096999b6b2b7c65104b2c1b245c7d233bc2f..f093592a85da872ca0b206d222e025c08f124dff 100644 (file)
--- a/youtube_dl/extractor/eighttracks.py
+++ b/youtube_dl/extractor/eighttracks.py
@@ -135,7 +135,7 @@ class EightTracksIE(InfoExtractor):
                     if download_tries > 3:
                         raise
                     else:
-                        ++download_tries
+                        download_tries += 1
                         time.sleep(avg_song_duration)
 
             api_data = json.loads(api_json)