Snippets for python:uvloop 0.22.1 from Alpine armv7

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-armv7/community/py3-uvloop/py3-uvloop-0.22.1-r1.log.

• uvloop/loop.c:62660:43: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]