[Windows] Fix several build warnings #3357

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	# http://boinc.berkeley.edu
	# Copyright (C) 2023 University of California
	#
	# BOINC is free software; you can redistribute it and/or modify it
	# under the terms of the GNU Lesser General Public License
	# as published by the Free Software Foundation,
	# either version 3 of the License, or (at your option) any later version.
	#
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	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
	# See the GNU Lesser General Public License for more details.
	#
	# You should have received a copy of the GNU Lesser General Public License
	# along with BOINC. If not, see <http://www.gnu.org/licenses/>.

	name: Source Code Check
	on:
	push:
	branches: [ master, 'client_release/**' ]
	tags: [ 'client_release/**' ]
	pull_request:
	branches: [ master ]
	schedule:
	- cron: '0 0 * * *'

	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	jobs:
	build:
	name: ${{ matrix.type }}
	runs-on: ubuntu-latest
	strategy:
	matrix:
	type: [source-code-check]
	fail-fast: false
	steps:
	- uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
	with:
	fetch-depth: 2
	- name: Check source code for illegal symbols
	if: ${{ success() }}
	run: \|
	python ./ci_tools/source_code_check.py .
	- name: Check source code for trailing whitespaces
	if: ${{ success() }}
	run: \|
	python ./ci_tools/trailing_whitespaces_check.py .

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