Fix possible leak when bridge is in monitor mode. Use m_freem() which will free the entire chain, instead of using m_free() which will free just the mbuf that was passed.
Fix possible leak when bridge is in monitor mode. Use m_freem() which will
free the entire chain, instead of using m_free() which will free just the
mbuf that was passed.

Discussed with:	thompsa
MFC after:	3 days

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase