gsm: Do not attempt to release SAPI=0 if it was never allocated

In case of handover (but probably on RACH) we would send a RLL for
SAPI=0 even if this SAPI was never established. After we have released
all SAPI>0 locally check that SAPI=0 is established and if not release
the rf channel directly.
3 files changed
tree: f3da7f322fc3bd432d497ea27c8e15c74d711632
  1. debian/
  2. hlrsync/
  3. linux-kernel/
  4. openbsc/
  5. wireshark/
  6. README