isl_ast_build.c: isl_ast_build_set_loop_bounds: avoid double free on error path
isl_ast_build.c: isl_ast_build_set_loop_bounds: avoid double free on error path

The double free was introduced in ddd996c (isl_ast_build_set_loop_bounds:
extract out update of pending and generated, Thu Jul 16 19:54:49 2015 +0200).

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

tobig/isl,inducer/isl-mirror,inducer/isl-mirror,tobig/isl,PollyLabs/isl,Meinersbur/isl,nicolasvasilache/isl,nicolasvasilache/isl,PollyLabs/isl,nicolasvasilache/isl,nicolasvasilache/isl,inducer/isl-mirror,inducer/isl-mirror,Meinersbur/isl,PollyLabs/isl,inducer/isl-mirror,Meinersbur/isl,tobig/isl,Meinersbur/isl,PollyLabs/isl,nicolasvasilache/isl,tobig/isl,PollyLabs/isl