Media Playlist Set* methods modifying wrong segments about m3u8

[bradleyfalzon]

I had considered proposing alternatives to this exact FIFO method (looking at these examples: https://gist.github.com/moraes/2141121), where we could have auto extending playlists (see rasky's suggestion), but this would potentially be a breaking change, as others may depend on the playlist full behaviour, either case, this version should still be fixed (if it isn't intentional behaviour).

[bradleyfalzon]

@grafov when you have time, do you have any thoughts on this? Importantly, am I doing something wrong here, or is this an actual problem?

[grafov]

Finally I looked this bug, it reproduced as explained above. I fully agree with @bradleyfalzon, my usage of uint without check was wrong. Bradley please merge your commit it fix problem properly.

[grafov]

Well I found pull request and merged it. Thank you!

[bradleyfalzon]

Thanks @grafov, much appreciated