[SpaceEngine] NFC: Switch to `!=` instead of `compare` on `Head` identifiers
[SpaceEngine] NFC: Switch to `!=` instead of `compare` on `Head` identifiers

Since `Head` comparison only checks for equality, all of such
checks could be switched from `compare` to `!=` operator.

CodaFi/swift,shahmishal/swift,austinzheng/swift,airspeedswift/swift,glessard/swift,ahoppen/swift,lorentey/swift,harlanhaskins/swift,rudkx/swift,atrick/swift,rudkx/swift,harlanhaskins/swift,JGiola/swift,rudkx/swift,nathawes/swift,alblue/swift,atrick/swift,xwu/swift,JGiola/swift,karwa/swift,allevato/swift,xwu/swift,xwu/swift,gregomni/swift,devincoughlin/swift,natecook1000/swift,sschiau/swift,amraboelela/swift,devincoughlin/swift,tkremenek/swift,aschwaighofer/swift,xedin/swift,airspeedswift/swift,rudkx/swift,alblue/swift,JGiola/swift,practicalswift/swift,parkera/swift,jopamer/swift,aschwaighofer/swift,airspeedswift/swift,amraboelela/swift,amraboelela/swift,amraboelela/swift,practicalswift/swift,xedin/swift,danielmartin/swift,apple/swift,lorentey/swift,aschwaighofer/swift,practicalswift/swift,parkera/swift,devincoughlin/swift,jckarter/swift,shajrawi/swift,sschiau/swift,gregomni/swift,parkera/swift,austinzheng/swift,natecook1000/swift,benlangmuir/swift,devincoughlin/swift,karwa/swift,devincoughlin/swift,ahoppen/swift,allevato/swift,xedin/swift,hooman/swift,lorentey/swift,stephentyrone/swift,harlanhaskins/swift,xwu/swift,sschiau/swift,danielmartin/swift,devincoughlin/swift,gribozavr/swift,karwa/swift,devincoughlin/swift,tkremenek/swift,karwa/swift,hooman/swift,jckarter/swift,benlangmuir/swift,brentdax/swift,allevato/swift,nathawes/swift,karwa/swift,brentdax/swift,shajrawi/swift,stephentyrone/swift,atrick/swift,brentdax/swift,parkera/swift,xedin/swift,allevato/swift,austinzheng/swift,danielmartin/swift,jopamer/swift,brentdax/swift,sschiau/swift,roambotics/swift,brentdax/swift,alblue/swift,alblue/swift,apple/swift,sschiau/swift,parkera/swift,xedin/swift,benlangmuir/swift,practicalswift/swift,practicalswift/swift,apple/swift,aschwaighofer/swift,roambotics/swift,sschiau/swift,practicalswift/swift,brentdax/swift,glessard/swift,glessard/swift,parkera/swift,sschiau/swift,gribozavr/swift,karwa/swift,apple/swift,lorentey/swift,shajrawi/swift,amraboelela/swift,shajrawi/swift,brentdax/swift,hooman/swift,allevato/swift,rudkx/swift,natecook1000/swift,tkremenek/swift,natecook1000/swift,apple/swift,CodaFi/swift,jopamer/swift,atrick/swift,airspeedswift/swift,stephentyrone/swift,lorentey/swift,amraboelela/swift,tkremenek/swift,tkremenek/swift,jopamer/swift,roambotics/swift,jopamer/swift,austinzheng/swift,jmgc/swift,xedin/swift,hooman/swift,benlangmuir/swift,shahmishal/swift,shajrawi/swift,glessard/swift,harlanhaskins/swift,roambotics/swift,aschwaighofer/swift,JGiola/swift,gregomni/swift,atrick/swift,devincoughlin/swift,JGiola/swift,jopamer/swift,lorentey/swift,allevato/swift,shajrawi/swift,glessard/swift,parkera/swift,natecook1000/swift,allevato/swift,airspeedswift/swift,aschwaighofer/swift,nathawes/swift,CodaFi/swift,jmgc/swift,practicalswift/swift,gregomni/swift,nathawes/swift,ahoppen/swift,natecook1000/swift,harlanhaskins/swift,danielmartin/swift,benlangmuir/swift,stephentyrone/swift,stephentyrone/swift,nathawes/swift,hooman/swift,stephentyrone/swift,CodaFi/swift,austinzheng/swift,jckarter/swift,jckarter/swift,practicalswift/swift,harlanhaskins/swift,stephentyrone/swift,hooman/swift,nathawes/swift,rudkx/swift,glessard/swift,jckarter/swift,roambotics/swift,ahoppen/swift,austinzheng/swift,shajrawi/swift,harlanhaskins/swift,gribozavr/swift,jmgc/swift,karwa/swift,CodaFi/swift,natecook1000/swift,shahmishal/swift,jckarter/swift,airspeedswift/swift,xwu/swift,xwu/swift,alblue/swift,gribozavr/swift,ahoppen/swift,jmgc/swift,xwu/swift,jopamer/swift,tkremenek/swift,shahmishal/swift,alblue/swift,alblue/swift,jmgc/swift,gribozavr/swift,roambotics/swift,danielmartin/swift,CodaFi/swift,shahmishal/swift,danielmartin/swift,aschwaighofer/swift,ahoppen/swift,danielmartin/swift,benlangmuir/swift,lorentey/swift,airspeedswift/swift,lorentey/swift,tkremenek/swift,shahmishal/swift,shahmishal/swift,sschiau/swift,karwa/swift,xedin/swift,jmgc/swift,xedin/swift,jmgc/swift,JGiola/swift,gribozavr/swift,CodaFi/swift,amraboelela/swift,austinzheng/swift,gregomni/swift,apple/swift,gribozavr/swift,nathawes/swift,gregomni/swift,gribozavr/swift,atrick/swift,jckarter/swift,shajrawi/swift,parkera/swift,shahmishal/swift,hooman/swift