Render instance ID as unsigned in the logger
Render instance ID as unsigned in the logger

Change-Id: Id210e18a93000221c2e55f8e7098fcccfa56533a
Reviewed-on: http://review.couchbase.org/95124
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Sergey Avseyev <87f6d5e4fd3644c3c20800cde7fd3ad1569370b3@gmail.com>

couchbaselabs/php-couchbase,couchbase/php-couchbase,couchbaselabs/php-couchbase,couchbaselabs/php-couchbase,couchbaselabs/php-couchbase,couchbase/php-couchbase,couchbase/php-couchbase,couchbase/php-couchbase