Comma after extinf tag

[saravindpsg]

Add comma separator at the end of #EXTINF tag line even if title is not present.

Without the comma separator, I found out that HLS Playback fails for some players which expect a comma at the end of EXTINF tag.

Here is the link to the HLS spec:

https://tools.ietf.org/html/draft-pantos-http-live-streaming-20#section-4.3.2.1

[Wopple]

I am surprised but you are correct. The spec does indeed say a comma is required.

I think the parsing should still be permissive because:

• the existence of the comma w/o a title adds no value
• it is very likely many playlists are breaking this part of the spec

LGTM