isl_tab_pip.c: sol_map_add: fix double free on error path
isl_tab_pip.c: sol_map_add: fix double free on error path

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

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