MB-5811: Fixed off by one error in cbstats args parsing
MB-5811: Fixed off by one error in cbstats args parsing

Change-Id: Idddcb05abdf2100cdb7027928817e894fd3de4ff
Reviewed-on: http://review.couchbase.org/18253
Reviewed-by: Junyi Xie <cec9b1c9f34a8d92cba938f3f3364d5120580782@gmail.com>
Reviewed-by: Michael Wiederhold <a17fed27eaa842282862ff7c1b9c8395a26ac320@couchbase.com>
Tested-by: Michael Wiederhold <a17fed27eaa842282862ff7c1b9c8395a26ac320@couchbase.com>

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