Fix warning reported by '-Wformat='
Fix warning reported by '-Wformat='

format '%d' expects argument of type 'int', but argument 5 has type 'DcpResponse::Event' [-Wformat=]

Change-Id: I2c2979d8a1c539b72db8f772ecfd95227246c245
Reviewed-on: http://review.couchbase.org/76126
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>

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