cgi-bin/var.c: Fix return value if the text is invalid #1659

	# For most projects, this workflow file will not need changing; you simply need
	# to commit it to your repository.
	#
	# You may wish to alter this file to override the set of languages analyzed,
	# or to provide custom queries or build logic.
	#
	# ****** NOTE ******
	# We have attempted to detect the languages in your repository. Please check
	# the `language` matrix defined below to confirm you have the correct set of
	# supported CodeQL languages.
	#
	name: "CodeQL"

	on:
	push:
	branches: [ master, 2.4.x ]
	pull_request:
	# The branches below must be a subset of the branches above
	branches: [ master, 2.4.x ]
	schedule:
	- cron: '39 11 * * 3'

	jobs:
	analyze:
	name: Analyze
	runs-on: ubuntu-latest
	permissions:
	actions: read
	contents: read
	security-events: write

	strategy:
	fail-fast: false
	matrix:
	language: [ 'cpp' ]

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: update build environment
	run: sudo apt-get update --fix-missing -y

	- name: install prerequisites
	run: sudo apt-get install -y avahi-daemon cppcheck libavahi-client-dev libcups2-dev libcupsimage2-dev libgnutls28-dev libjpeg-dev libpam-dev libpng-dev libusb-1.0-0-dev zlib1g-dev

	- name: Initialize CodeQL
	uses: github/codeql-action/init@v3
	with:
	languages: ${{ matrix.language }}
	config-file: ./.github/codeql.yml
	queries: +security-and-quality

	- name: Autobuild
	uses: github/codeql-action/autobuild@v3

	- name: Perform CodeQL Analysis
	uses: github/codeql-action/analyze@v3
	with:
	category: "/language:${{ matrix.language }}"

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