In issue#30409PyFunction_GetAnnotations was fixed so it wouldn't return a tuple. That's good.

But this change changed the return value.PyFunction_GetAnnotations now returns anew reference to the annotations dict. But according to the documentation, it should return aborrowed reference.

https://docs.python.org/3/c-api/function.html#c.PyFunction_GetAnnotations

If users only read the documentation, and assume that it's correct, they'll leak a reference to the annotation dict.

We could fix this by changing the documentation. However, all the otherPyFunction_Get* functionsalso return borrowed references. So I think the correct fix is to remove the incref.