isl_basic_map_has_defining_equality: reuse isl_basic_map_check_range
isl_basic_map_has_defining_equality: reuse isl_basic_map_check_range

Signed-off-by: Sven Verdoolaege <235c10dd23b819f81cdc9756a251746bc184cab6@gmail.com>

Meinersbur/isl,Meinersbur/isl,Meinersbur/isl,Meinersbur/isl