OTHER: Removing 1st playlist entry should yield valid pos.
OTHER: Removing 1st playlist entry should yield valid pos.

When a medialib entry is removed and playlist position is
the first entry, we used to set -1 as the current position
while we really ought to keep it at 0 and emit new position.

theeternalsw0rd/xmms2,chrippa/xmms2,chrippa/xmms2,theeternalsw0rd/xmms2,six600110/xmms2,theeternalsw0rd/xmms2,krad-radio/xmms2-krad,krad-radio/xmms2-krad,chrippa/xmms2,krad-radio/xmms2-krad,six600110/xmms2,chrippa/xmms2,six600110/xmms2,six600110/xmms2,theeternalsw0rd/xmms2,chrippa/xmms2,krad-radio/xmms2-krad,krad-radio/xmms2-krad,six600110/xmms2,theeternalsw0rd/xmms2,chrippa/xmms2,krad-radio/xmms2-krad,theeternalsw0rd/xmms2,six600110/xmms2