Remove compile warnings on WIN32
Remove compile warnings on WIN32

Change-Id: I7ff72ec03212f932a6e0da83d37a0b9fb454658a
Reviewed-on: http://review.couchbase.org/52906
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>

cloudrain21/memcached-1,daverigby/kv_engine,owendCB/memcached,couchbase/memcached,couchbase/memcached,daverigby/memcached,daverigby/memcached,owendCB/memcached,couchbase/memcached,daverigby/kv_engine,daverigby/memcached,daverigby/kv_engine,cloudrain21/memcached-1,owendCB/memcached,owendCB/memcached,cloudrain21/memcached-1,daverigby/kv_engine,cloudrain21/memcached-1,daverigby/memcached,couchbase/memcached