Fix memory leak in bc_mcraw
Fix memory leak in bc_mcraw

We were using calloc without any free. This makes it use std::vector

Change-Id: Ic971e6bdab19e60c87fc66bcbe0c5fb0e382c8dd
Reviewed-on: http://review.couchbase.org/77553
Reviewed-by: Sergey Avseyev <87f6d5e4fd3644c3c20800cde7fd3ad1569370b3@gmail.com>
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>

avsej/libcouchbase,avsej/libcouchbase,avsej/libcouchbase,avsej/libcouchbase,couchbase/libcouchbase,mody/libcouchbase,avsej/libcouchbase,kojiromike/libcouchbase,mody/libcouchbase,mody/libcouchbase,avsej/libcouchbase,couchbase/libcouchbase,kojiromike/libcouchbase,couchbase/libcouchbase,couchbase/libcouchbase,couchbase/libcouchbase,kojiromike/libcouchbase,mody/libcouchbase,couchbase/libcouchbase,couchbase/libcouchbase,avsej/libcouchbase,kojiromike/libcouchbase