[vessel] Make hls formats non fatal

youtube_dl/extractor/vessel.py

@@ -115,7 +115,7 @@ class VesselIE(InfoExtractor):
             if name == 'hls-index':
                 formats.extend(self._extract_m3u8_formats(
                     location, video_id, ext='mp4',
-                    entry_protocol='m3u8_native', m3u8_id='m3u8'))
+                    entry_protocol='m3u8_native', m3u8_id='m3u8', fatal=False))
             elif name == 'dash-index':
                 formats.extend(self._extract_mpd_formats(
                     location, video_id, mpd_id='dash', fatal=False))