fix race in cancel replication
fix race in cancel replication

janl/pouchdb,h4ki/pouchdb,optikfluffel/pouchdb,cshum/pouchdb,bbenezech/pouchdb,Dashed/pouchdb,TechnicalPursuit/pouchdb,optikfluffel/pouchdb,crissdev/pouchdb,colinskow/pouchdb,p5150j/pouchdb,lukevanhorn/pouchdb,elkingtonmcb/pouchdb,mainerror/pouchdb,nickcolley/pouchdb,pouchdb/pouchdb,callahanchris/pouchdb,willholley/pouchdb,janraasch/pouchdb,lakhansamani/pouchdb,KlausTrainer/pouchdb,mwksl/pouchdb,lakhansamani/pouchdb,nickcolley/pouchdb,nicolasbrugneaux/pouchdb,asmiller/pouchdb,optikfluffel/pouchdb,TechnicalPursuit/pouchdb,mikeymckay/pouchdb,shimaore/pouchdb,olafura/pouchdb,janl/pouchdb,shimaore/pouchdb,mattbailey/pouchdb,p5150j/pouchdb,lukevanhorn/pouchdb,slaskis/pouchdb,TechnicalPursuit/pouchdb,mattbailey/pouchdb,patrickgrey/pouchdb,asmiller/pouchdb,mwksl/pouchdb,caolan/pouchdb,microlv/pouchdb,janraasch/pouchdb,slaskis/pouchdb,patrickgrey/pouchdb,adamvert/pouchdb,KlausTrainer/pouchdb,jhs/pouchdb,tyler-johnson/pouchdb,lakhansamani/pouchdb,greyhwndz/pouchdb,cesine/pouchdb,marcusandre/pouchdb,garrensmith/pouchdb,willholley/pouchdb,mikeymckay/pouchdb,willholley/pouchdb,johnofkorea/pouchdb,cshum/pouchdb,Knowledge-OTP/pouchdb,seigel/pouchdb,shimaore/pouchdb,ntwcklng/pouchdb,Actonate/pouchdb,pouchdb/pouchdb,patrickgrey/pouchdb,janl/pouchdb,crissdev/pouchdb,Actonate/pouchdb,Charlotteis/pouchdb,maxogden/pouchdb,slang800/pouchdb,microlv/pouchdb,garrensmith/pouchdb,cshum/pouchdb,yaronyg/pouchdb,elkingtonmcb/pouchdb,cesine/pouchdb,asmiller/pouchdb,colinskow/pouchdb,greyhwndz/pouchdb,seigel/pouchdb,bbenezech/pouchdb,tyler-johnson/pouchdb,jhs/pouchdb,ntwcklng/pouchdb,daleharvey/pouchdb,lukevanhorn/pouchdb,bbenezech/pouchdb,greyhwndz/pouchdb,daleharvey/pouchdb,ramdhavepreetam/pouchdb,spMatti/pouchdb,mainerror/pouchdb,daleharvey/pouchdb,Charlotteis/pouchdb,slaskis/pouchdb,jhs/pouchdb,p5150j/pouchdb,crissdev/pouchdb,tohagan/pouchdb,nicolasbrugneaux/pouchdb,Dashed/pouchdb,marcusandre/pouchdb,Dashed/pouchdb,janraasch/pouchdb,cesarmarinhorj/pouchdb,HospitalRun/pouchdb,johnofkorea/pouchdb,evidenceprime/pouchdb,mainerror/pouchdb,nicolasbrugneaux/pouchdb,cdaringe/pouchdb,callahanchris/pouchdb,slang800/pouchdb,mwksl/pouchdb,yaronyg/pouchdb,seigel/pouchdb,Charlotteis/pouchdb,johnofkorea/pouchdb,cesarmarinhorj/pouchdb,cdaringe/pouchdb,pouchdb/pouchdb,ramdhavepreetam/pouchdb,mattbailey/pouchdb,yaronyg/pouchdb,garrensmith/pouchdb,HospitalRun/pouchdb,slang800/pouchdb,ramdhavepreetam/pouchdb,KlausTrainer/pouchdb,microlv/pouchdb,cesarmarinhorj/pouchdb,adamvert/pouchdb,tohagan/pouchdb,tohagan/pouchdb,nickcolley/pouchdb,spMatti/pouchdb,cdaringe/pouchdb,mikeal/pouchdb,h4ki/pouchdb,ntwcklng/pouchdb,Knowledge-OTP/pouchdb,elkingtonmcb/pouchdb,marcusandre/pouchdb,tyler-johnson/pouchdb,mikeymckay/pouchdb,colinskow/pouchdb,adamvert/pouchdb,Actonate/pouchdb,spMatti/pouchdb,Knowledge-OTP/pouchdb,h4ki/pouchdb,HospitalRun/pouchdb,callahanchris/pouchdb