fix variable warning
fix variable warning

StephenGrider/refluxjs,reflux/reflux-core,insionng/refluxjs,watonyweng/refluxjs,misnet/refluxjs,Sipree/reflux-core,VasylHryha/refluxjs,goatslacker/refluxjs,reflux/refluxjs,ericf89/reflux-core,taskworld/refluxjs,H3Chief/reflux-core,spoike/refluxjs,VanTanev/refluxjs,Mayho/refluxjs,williamle8300/refluxjs,simonvizzini/refluxjs,juliankrispel/refluxjs,sahat/refluxjs,vebin/refluxjs,GerHobbelt/refluxjs,mjhlybmwq/refluxjs,robert-chiniquy/refluxjs,lishengzxc/refluxjs,Sipree/refluxjs,uniphil/refluxjs,bsingr/refluxjs,yetone/refluxjs