isl_qsort.h: fix whitespace
isl_qsort.h: fix whitespace

Signed-off-by: Sven Verdoolaege <e5350bbed4977f5eb8ae1dc6abd9ae59d21ace75@kotnet.org>

BobSaget-Mod/libisl,PollyLabs/isl,abduld/isl,epowers/isl,jleben/isl,pierrotdelalune/isl,Meinersbur/isl,evaautomation/isl,SaberMod/isl-current,tobig/isl,KangDroidSMProject/ISL,Distrotech/isl,pierrotdelalune/isl,serge-sans-paille/isl,nicolasvasilache/isl,epowers/isl,PollyLabs/isl,jleben/isl,cfx-next/toolchain_isl-upstream,BobSaget-Mod/libisl,jleben/isl,VanirLLVM/toolchain_isl,UBERTC/isl,inducer/isl-mirror,BenzoSM/isl,KangDroidSMProject/ISL,UBERTC/isl,Meinersbur/isl,inducer/isl-mirror,serge-sans-paille/isl,evaautomation/isl,crossbuild/isl,BobSaget-Mod/libisl,PollyLabs/isl,VanirLLVM/toolchain_isl,serge-sans-paille/isl,evaautomation/isl,nicolasvasilache/isl,nicolasvasilache/isl,pierrotdelalune/isl,cfx-next/toolchain_isl-upstream,simbuerg/isl,KangDroidSMProject/ISL,inducer/isl-mirror,Distrotech/isl,nicolasvasilache/isl,crossbuild/isl,inducer/isl-mirror,PollyLabs/isl,cfx-next/toolchain_isl-upstream,SaberMod/isl-current,nicolasvasilache/isl,PollyLabs/isl,epowers/isl,crossbuild/isl,jleben/isl,evaautomation/isl,BobSaget-Mod/libisl,tobig/isl,serge-sans-paille/isl,simbuerg/isl,SaberMod/isl-current,BenzoSM/isl,BenzoSM/isl,Meinersbur/isl,epowers/isl,KangDroidSMProject/ISL,abduld/isl,BenzoSM/isl,Distrotech/isl,jleben/isl,pierrotdelalune/isl,simbuerg/isl,UBERTC/isl,simbuerg/isl,serge-sans-paille/isl,VanirLLVM/toolchain_isl,cfx-next/toolchain_isl-upstream,crossbuild/isl,KangDroidSMProject/ISL,tobig/isl,BenzoSM/isl,simbuerg/isl,epowers/isl,abduld/isl,Distrotech/isl,UBERTC/isl,VanirLLVM/toolchain_isl,abduld/isl,cfx-next/toolchain_isl-upstream,tobig/isl,Meinersbur/isl,pierrotdelalune/isl,inducer/isl-mirror,VanirLLVM/toolchain_isl,SaberMod/isl-current,BobSaget-Mod/libisl,Distrotech/isl