fix(demo): added gaurd to prevent crash if default theme is not used … #5

	name: Verify code formatting
	on:
	push:
	pull_request:

	jobs:
	verify-formatting:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	with:
	persist-credentials: false
	fetch-depth: 0
	- name: Install astyle
	run: \|
	sudo add-apt-repository -y "deb http://archive.ubuntu.com/ubuntu `lsb_release -sc` main universe restricted multiverse"
	sudo apt-get update -y -qq
	sudo apt-get install astyle
	- name: Format code
	run: python code-format.py
	working-directory: scripts
	- name: Check that repository is clean
	shell: bash
	run: \|
	set -o pipefail
	if ! (git diff --exit-code --color=always \| tee /tmp/lvgl_diff.patch); then
	echo "Please apply the preceding diff to your code or run scripts/code-format.py"
	exit 1
	fi
	- name: Comment PR
	uses: thollander/actions-comment-pull-request@v1
	if: github.event_name == 'pull_request' && failure()
	with:
	message: \|
	Your PR needs its formatting corrected before it can be merged upstream.

	Please run `scripts/code-format.py` and commit the resulting change.
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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