Fix seg fault in scanner.c: Allocate the stack array if null #236

	name: Build

	on:
	push:
	branches:
	- main
	pull_request:
	workflow_dispatch:

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Set up Node
	uses: actions/setup-node@v3
	with:
	node-version: '18'
	- name: Install dependencies
	run: npm install
	- name: Generate parser
	run: npm run generate
	- name: Verify that generated parser matches the repository
	run: \|
	diff=`git diff HEAD -- src`
	echo "$diff"
	test -z "$diff"
	- name: Output parser size
	run: du -sh src/* \| sort -h
	- name: Run tests
	run: npm test
	- name: Set up Rust
	uses: dtolnay/rust-toolchain@stable
	- name: Build and test crate
	run: cargo test

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