Cleanup getpwuid_r wrapper
Cleanup getpwuid_r wrapper

The wrapper had some transmutes still from an earlier implementation,
and they are not needed now.

dannydulai/alacritty,jwilm/alacritty,jwilm/alacritty,alacritty/alacritty,dannydulai/alacritty,jwilm/alacritty,jwilm/alacritty,alacritty/alacritty