Fix mem_size_sub() for WIN32 in MEM_USE_RTL mode

winterheart commented 1 week ago

Pull Request Type

[ ] GitHub Workflow changes
[ ] Documentation or Wiki changes
[ ] Build and Dependency changes
[x] Runtime changes
- [ ] Render changes
- [ ] Audio changes
- [ ] Input changes
- [ ] Network changes
- [x] Other changes

Description

Use _msize() instead of HeapSize() in RTL memory allocation model. Fixes crash on mission start in Windows.

Related Issues

Closes #449.

Screenshots (if applicable)

Checklist

[x] I have tested my changes locally and verified that they work as intended.
[x] I have documented any new or modified functionality.
[x] I have reviewed the changes to ensure they do not introduce any unnecessary complexity or duplicate code.
[x] I understand that by submitting this pull request, I am agreeing to license my contributions under the project's license.

Additional Comments

Jayman2000 commented 1 week ago

I tried compiling this PR on Windows 11 with ENABLE_MEM_RTL=OFF and ENABLE_MEM_RTL=ON. Both times, I was able to run the game in DWM8And16BitMitigation compatibility mode and load into a level.