Decoding MediaPlaylist panics with error: index out of range [0] with length 0

[hasc]

Hello,

many thanks for sharing this library!

Since version v0.11.2 decoding a MediaPlaylist panics with the error message: "index out of range [0] with length 0"

Steps to reproduce:

const manifest = `#EXTM3U
#EXT-X-TARGETDURATION:6
#EXT-X-MEDIA-SEQUENCE:419978785
#EXT-X-VERSION:3
#EXT-X-KEY:METHOD=NONE
#EXTINF:4,
path/to/segment_419978785.ts
#EXTINF:4,
path/to/segment_419978786.ts
#EXTINF:4,
path/to/segment_419978787.ts
#EXTINF:4,
path/to/segment_419978788.ts
#EXTINF:4,
path/to/segment_419978789.ts
`
_, _, err := m3u8.DecodeFrom(strings.NewReader(manifest), true)

[coder-free]

go get -u github.com/grafov/m3u8@master
master it fixed.

[grafov]

Thank you. I set up tags properly. Latest version where the bug was fixed is v0.11.3.