MB-14496 Fix to the type mismatch bug in a file's rev number.
MB-14496 Fix to the type mismatch bug in a file's rev number.

Change-Id: I3e455d6cee9ac24651510badc116a8284418b118
Reviewed-on: http://review.couchbase.org/50390
Reviewed-by: Sundararaman Sridharan <333a3f71d3ad6e01fc953c4fa06bc1f3cd014910@couchbase.com>
Tested-by: Chiyoung Seo <fcffc23db27b19ee4ebba46695ee6b50e09216a2@couchbase.com>

teligent-ru/ep-engine,daverigby/kv_engine,hisundar/ep-engine,hisundar/ep-engine,hisundar/ep-engine,teligent-ru/ep-engine,owendCB/ep-engine,couchbase/ep-engine,teligent-ru/ep-engine,membase/ep-engine,couchbase/ep-engine,daverigby/kv_engine,membase/ep-engine,membase/ep-engine,hisundar/ep-engine,owendCB/ep-engine,owendCB/ep-engine,teligent-ru/ep-engine,couchbase/ep-engine,daverigby/ep-engine,daverigby/ep-engine,daverigby/ep-engine,daverigby/ep-engine,owendCB/ep-engine,daverigby/kv_engine,membase/ep-engine,couchbase/ep-engine,daverigby/kv_engine