mgcp_protocol: Ensure we don't call strtok_r with NULL data

Change-Id: I1dce4df6a49fe95db592b0598194e3a8b8b1b994
Fixes: Coverity CID 135181
1 file changed
tree: 1673b4f34d845f42eba23f16242bcb38d23e9a51
  1. contrib/
  2. debian/
  3. openbsc/
  4. .gitignore
  5. .gitreview
  6. .mailmap