gbproxy: Add missing gbprox_process_bssgp_ul() return check

This should have been part of the 'Implement IMSI acquisition'
commit, where a similar change has been made for BSS originated PTP
messages.

Sponsored-by: On-Waves ehf
1 file changed
tree: e0b0e13362f715f0fee374c569732c185b5e6759
  1. debian/
  2. hlrsync/
  3. linux-kernel/
  4. openbsc/
  5. wireshark/
  6. README