Check return value for couchstore_db_info
Check return value for couchstore_db_info

We could end up using uninitialized variables

Change-Id: Id56937841198fbf0b7cbbf041a91644cff5b67cf
Reviewed-on: http://review.couchbase.org/75859
Reviewed-by: Oliver Downard <2b519a6943d9144e0afb0b62d71fdc5e98fa8017@couchbase.com>
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>

daverigby/kv_engine,membase/ep-engine,daverigby/kv_engine,couchbase/ep-engine,daverigby/kv_engine,couchbase/ep-engine,membase/ep-engine,couchbase/ep-engine,daverigby/kv_engine,membase/ep-engine,membase/ep-engine,couchbase/ep-engine