isl_dim_set_name: plug memory leak when overwriting name
isl_dim_set_name: plug memory leak when overwriting name

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

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