aco: Work around MSVC restrict in c99_compat.h
Future LLVM header leads to __declspec(__restrict), which is invalid. Just undefine the restrict macro to keep __declspec(restrict).
Fixes #5512 (closed).
Edited by James Park
Future LLVM header leads to __declspec(__restrict), which is invalid. Just undefine the restrict macro to keep __declspec(restrict).
Fixes #5512 (closed).