mi_malloc: TARGET_IOS_IPHONE and TARGET_IOS_SIMULATOR do not exist.

[LumioseSil]

Bug report

Bug description:

You meant TARGET_OS_IPHONE and TARGET_OS_SIMULATOR, so checking the negation was always true.

CPython versions tested on:

3.15

Operating systems tested on:

macOS

Linked PRs

• gh-142721: Use the correct macros defined in TargerConditionals for Apple targets #142723

[picnixz]

Since this is vendored code, you should create a PR upstream please.