`descr_set_trampoline_call` return type should be `int` not `PyObject*`

[hoodmane]

getset_set return type is int, descr_set_trampoline_call's return type needs to be the same. I think this was a copy-paste error that occurred when applying my patch where descr_set_trampoline_call returns int:
https://github.com/pyodide/pyodide/blob/main/cpython/patches/0001-Patch-in-call-trampolines-to-handle-fpcast-troubles.patch

Linked PRs

• gh-99443: descr_set_trampoline_call return type should be int not PyObject* #99444
• [3.11] gh-99443: descr_set_trampoline_call return type should be int not PyObject* (GH-99444) #99552

[hoodmane]

See also #91318. This comes up from Pyodide's upgrade to Python 3.11. I'm not sure why I didn't notice it before.

@tiran

[hauntsaninja]

Thanks for fixing!