free_vinum:	Clean out bdevsw entry before unloading kld.
free_vinum:	Clean out bdevsw entry before unloading kld.

Repeatedly-tripped-over-by: Vallo Kallaste <vallo@matti.ee>

		When VINUMDEBUG is set, free any memory found still
		allocated.

		Only log errors if DEBUG_EXITFREE is set.

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