gh-142476: Fix Windows crashing with JIT

[Fidget-Spinner]

This happened after #143021

• Issue: ASan memory leak in test_gc with --enable-experimental-jit (allocate_executor) #142476

[Fidget-Spinner]

I merged as it's a trivial change and more of a bugfix on top of the previous PR by the contributor that I didn't catch.

[chris-eibl]

Maybe related:

C:\a\cpython\cpython\Python\optimizer.c(1776): warning C4716: 'executor_clear': must return a value [C:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]

cpython/Python/optimizer.c

Lines 1772 to 1776 in e728b00

	static int
	executor_clear(PyObject *op)
	{
	executor_invalidate(op);
	}

PR: #143073