isl_coalesce.c: fix typo in comment
isl_coalesce.c: fix typo in comment

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

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