Fix memory access error when IPv6 prefix reading, should resolve #1972 #426

	name: alpine/musl

	on: [push, pull_request]

	permissions:
	contents: read

	jobs:
	musl:
	name: gcc
	runs-on: ubuntu-latest
	container:
	image: alpine:latest
	steps:
	- uses: actions/checkout@v1
	with:
	submodules: true
	- name: Install dependencies
	run: apk add binutils --no-cache build-base readline-dev openssl-dev ncurses-dev git cmake zlib-dev libsodium-dev gnu-libiconv
	- name: Configure
	run: ./configure
	- name: make
	run: make -C build

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