fix ffmpeg nil pointer crash #316

	name: CI
	on:
	push:
	branches:
	- '*'
	pull_request:
	branches:
	- '*'
	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Set up Go
	uses: actions/setup-go@v2
	with:
	go-version: 1.19
	- name: Setup Node.js environment
	uses: actions/[email protected]
	- name: Build
	run: make build-web bililive
	test:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Set up Go
	uses: actions/setup-go@v2
	with:
	go-version: 1.19
	- name: Setup Node.js environment
	uses: actions/[email protected]
	- name: Test
	run: make build-web test
	- name: Codecov
	uses: codecov/codecov-action@v2

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