isl_ast_codegen.c: generate_component: avoid invalid access on error path
isl_ast_codegen.c: generate_component: avoid invalid access on error path

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

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