[FIX] Fix potential segfault in ft_lstinsert_after in libft #11

	name: Build and Test

	on:
	pull_request:
	branches:
	- main

	jobs:
	unit_test:
	runs-on: ubuntu-latest

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

	- name: Set up build environment
	run: \|
	sudo apt-get update
	sudo apt-get install -y build-essential valgrind

	- name: Compile with Makefile
	run: make

	- name: Set up testing framework
	run: \|
	git clone https://github.com/LeaYeh/42_minishell_tester.git
	cp -r 42_minishell_tester $HOME
	chmod +x $HOME/42_minishell_tester/tester.sh

	- name: Check memory leaks and set up PR failed count
	run: \|
	$HOME/42_minishell_tester/tester.sh vm
	env:
	GH_BRANCH: "PR_FAILED_COUNT"

	- name: Checkout main branch
	uses: actions/checkout@v4
	with:
	ref: main

	- name: Set up main failed count
	run: $HOME/42_minishell_tester/tester.sh m
	env:
	GH_BRANCH: "MAIN_FAILED_COUNT"

	- name: Compare failed count
	run: \|
	echo "PR_FAILED_COUNT: $PR_FAILED_COUNT"
	echo "MAIN_FAILED_COUNT: $MAIN_FAILED_COUNT"
	if [ $PR_FAILED_COUNT -gt $MAIN_FAILED_COUNT ]; then
	echo "PR_FAILED_COUNT is greater than MAIN_FAILED_COUNT"
	exit 1
	else
	echo "PR_FAILED_COUNT is less than or equal to MAIN_FAILED_COUNT"
	exit 0
	fi
	env:
	PR_FAILED_COUNT: ${{ env.PR_FAILED_COUNT }}
	MAIN_FAILED_COUNT: ${{ env.MAIN_FAILED_COUNT }}

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