fix: 'GetLineByteFromPos' maybe return val overflow #1240

	name: unit-tests
	on: [push, pull_request]
	jobs:
	linux:
	name: linux
	runs-on: ubuntu-22.04
	strategy:
	matrix:
	vim:
	- nightly
	- v9.0.0000
	steps:
	- name: Install packages
	run: \|
	sudo apt update
	# install clangd language server
	sudo apt install -y clangd-15
	# install nodejs
	sudo apt install -y curl
	curl -fsSL https://deb.nodesource.com/setup_18.x \| sudo bash -
	sudo apt install -y nodejs
	# install the typescript language server
	sudo npm install -g typescript-language-server typescript
	# install the golang language server
	sudo apt install -y golang
	sudo apt install -y gopls
	# install the rust language server
	sudo apt install -y cargo rust-src
	mkdir -p ~/.local/bin
	curl -L https://github.com/rust-lang/rust-analyzer/releases/latest/download/rust-analyzer-x86_64-unknown-linux-gnu.gz \| gunzip -c - > ~/.local/bin/rust-analyzer
	chmod +x ~/.local/bin/rust-analyzer
	- name: Setup Vim
	uses: rhysd/action-setup-vim@v1
	id: vim
	with:
	version: ${{ matrix.vim }}
	- name: Checkout LSP plugin Code
	uses: actions/checkout@v4
	- name: Run Tests
	run: \|
	uname -a
	~/.local/bin/rust-analyzer --version
	export VIMPRG=${{ steps.vim.outputs.executable }}
	$VIMPRG --version
	cd test
	./run_tests.sh

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