rsl: Check if the channel is active and then start the channel release

In case we receive ERROR INDICATION and CONNECTION FAILURE we only
want to RF Channel Release the lchan once. This code is more simple
and should work as reliable as the previous commit.
1 file changed
tree: 4a726706da69598a56daf222def52971ec36e263
  1. debian/
  2. hlrsync/
  3. linux-kernel/
  4. openbsc/
  5. wireshark/
  6. README