bsc: Crash fix for the osmo-nitb/MNCC code

It is possible that MNCC sends a MNCC_LCHAN_MODIFY and
wants a channel mode that is not possible on the current
lchan, in that case a new channel is assigned. We now crash
as the osmo-nitb is not having an assignment complete handler,
add a NULL check.
1 file changed
tree: fac8b6ee848d7f562e591748f3b7f9f325cbc240
  1. hlrsync/
  2. linux-kernel/
  3. openbsc/
  4. wireshark/
  5. README