[test] use %diff to fix Windows test
[test] use %diff to fix Windows test

CodaFi/swift,allevato/swift,benlangmuir/swift,atrick/swift,JGiola/swift,benlangmuir/swift,JGiola/swift,nathawes/swift,benlangmuir/swift,atrick/swift,glessard/swift,benlangmuir/swift,parkera/swift,tkremenek/swift,parkera/swift,jmgc/swift,rudkx/swift,ahoppen/swift,jckarter/swift,tkremenek/swift,jmgc/swift,rudkx/swift,tkremenek/swift,apple/swift,CodaFi/swift,parkera/swift,CodaFi/swift,glessard/swift,apple/swift,jmgc/swift,ahoppen/swift,nathawes/swift,apple/swift,xwu/swift,airspeedswift/swift,hooman/swift,gregomni/swift,allevato/swift,xwu/swift,jckarter/swift,nathawes/swift,airspeedswift/swift,hooman/swift,glessard/swift,hooman/swift,parkera/swift,nathawes/swift,gregomni/swift,glessard/swift,jmgc/swift,airspeedswift/swift,glessard/swift,ahoppen/swift,jmgc/swift,apple/swift,JGiola/swift,ahoppen/swift,xwu/swift,hooman/swift,parkera/swift,allevato/swift,atrick/swift,xwu/swift,roambotics/swift,jckarter/swift,rudkx/swift,roambotics/swift,JGiola/swift,allevato/swift,xwu/swift,jckarter/swift,apple/swift,hooman/swift,ahoppen/swift,nathawes/swift,JGiola/swift,gregomni/swift,apple/swift,jckarter/swift,xwu/swift,allevato/swift,parkera/swift,tkremenek/swift,CodaFi/swift,allevato/swift,tkremenek/swift,jckarter/swift,parkera/swift,jmgc/swift,benlangmuir/swift,CodaFi/swift,nathawes/swift,atrick/swift,glessard/swift,allevato/swift,airspeedswift/swift,rudkx/swift,jmgc/swift,xwu/swift,hooman/swift,gregomni/swift,airspeedswift/swift,roambotics/swift,CodaFi/swift,gregomni/swift,rudkx/swift,atrick/swift,benlangmuir/swift,tkremenek/swift,roambotics/swift,JGiola/swift,nathawes/swift,hooman/swift,rudkx/swift,ahoppen/swift,tkremenek/swift,jckarter/swift,CodaFi/swift,atrick/swift,airspeedswift/swift,roambotics/swift,roambotics/swift,gregomni/swift,airspeedswift/swift,parkera/swift