patch 9.0.1917: undefined behaviour with python function pointer Commit: https://github.com/vim/vim/commit/d606fccf6fd716bda43a8e1d11d898f438d28b82 Author: Yee Cheng Chin <ychin.git@gmail.com> Date: Wed Sep 20 19:59:47 2023 +0200 patch 9.0.1917: undefined behaviour with python function pointer Problem: undefined behaviour with python function pointer Solution: correctly cast function pointers from void Fix more undefined behaviors in if_python Fix remaining UBSAN errors from Clang 17 in if_python in casting function pointers. Also fix a mistake where `PyMem_Free()` should be returning void, by the dynamic build is mistakenly casting it as a function that returns an int. closes: #13128 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>