[android] Fix function signature to match usage in libdispatch.
[android] Fix function signature to match usage in libdispatch.

The function signature in libdispatch doesn't use a dispatch_function_t
so compiling for Android should have fail, since the Swift code uses the
function without any parameters.

See
https://github.com/apple/swift-corelibs-libdispatch/blob/master/private/queue_private.h#L345
in which the function is defined with the signatured used in this
change.

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