Make sure buffers in if_bridge are fully initialized before copying them to userland.
Make sure buffers in if_bridge are fully initialized before copying
them to userland.

Security:	FreeBSD-SA-06:06.kmem

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