bug 1855 - Do not assert flusher task reference matches current task
bug 1855 - Do not assert flusher task reference matches current task

This is otherwise not used within this method and would occur when
there's a race between pausing, stopping or rescheduling and running
an entry.  As this could happen at *any* time, this assertion just
isn't valid.

Change-Id: I562decc36a7ac986f0fbaf8f61681cf6032310cb
Reviewed-on: http://review.northscale.com/1294
Reviewed-by: Matt Ingenthron <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@northscale.com>
Tested-by: Matt Ingenthron <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@northscale.com>

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