Userland: Switch static_assert of type sizes to AK::AssertSize

Author: https://github.com/bgianfo
Commit: 3e45c3ed90
Pull-request: https://github.com/SerenityOS/serenity/pull/9834
Reviewed-by: https://github.com/AtkinsSJ
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/linusg

Userland/DevTools/UserspaceEmulator/SoftFPU.h

@@ -28,7 +28,7 @@ union MMX {
     i16x4 v16u;
     i32x2 v32u;
 };
-static_assert(sizeof(MMX) == sizeof(u64));
+static_assert(AssertSize<MMX, sizeof(u64)>());
 
 class SoftFPU final {
 public: