Jeroen Ost authored Feb 22, 2012 and Jean-Baptiste Kempf committed Feb 23, 2012

This patch fixes Apple Http Live Streaming of a single stream without bandwith set.
According to the draft RFC, the bandwith parameter is optional. VLC treats this as bandwith zero but
estimates the bandwith based on time it takes to download segments to be able to seek accurately. When
the playlist is updated for a live m3u8, the bandwith value of 0 will cause a new version of the playlist
to be created - effectively stalling the playing stream. This patch makes sure that playlists that do not
specify bandwith reference the same instance.

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>