Add nil checks for WireGuard beacon to prevent crashes #1145

	name: Build & Test
	on:
	push:
	branches: ["v1.5.x/master"]
	pull_request:
	branches: ["v1.5.x/master"]
	types:
	- opened
	- reopened
	- synchronize
	- ready_for_review

	jobs:
	linux-windows-build:
	name: Linux & Windows Build
	runs-on: ubuntu-latest
	timeout-minutes: 90
	steps:
	- name: Go 1.20
	uses: actions/setup-go@v4
	with:
	go-version: "1.20.7"

	- name: OS Packages
	run: \|
	sudo apt-get update --fix-missing && sudo apt-get -y install \
	git build-essential zlib1g zlib1g-dev wget zip unzip \
	mingw-w64 binutils-mingw-w64 g++-mingw-w64 gcc-multilib

	- name: Check out code into the Go module directory
	uses: actions/checkout@v3

	- name: Git Fetch Tags
	run: git fetch --prune --unshallow --tags -f

	- name: Go Assets
	run: ./go-assets.sh

	- name: Make
	run: make linux

	- name: Test
	run: ./sliver-server unpack --force && ./go-tests.sh

	- name: Make Windows
	run: make windows

	macos-build:
	name: MacOS Build
	runs-on: macos-latest
	timeout-minutes: 90
	steps:
	- name: Go 1.20
	uses: actions/setup-go@v4
	with:
	go-version: "1.20.7"

	- name: Mingw
	run: brew install mingw-w64

	- name: Check out code into the Go module directory
	uses: actions/checkout@v3

	- name: Git Fetch Tags
	run: git fetch --prune --unshallow --tags -f

	- name: Go Assets
	run: ./go-assets.sh

	- name: Make
	run: make macos

	- name: Test
	env:
	SLIVER_CC_32: /usr/local/bin/i686-w64-mingw32-gcc
	SLIVER_CC_64: /usr/local/bin/x86_64-w64-mingw32-gcc
	run: ./sliver-server unpack --force && ./go-tests.sh

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