Fix Coverity issues and minor cleanups #510

	name: Build with CMake

	on:
	push:
	branches: [ master, github-actions ]
	pull_request:
	branches: [ master ]

	jobs:
	build:

	strategy:
	matrix:
	platform: [ubuntu-latest, macos-latest, windows-latest]
	cmake_build_type: [Debug, RelWithDebInfo]
	sctp_invariants: [ON, OFF]
	sctp_inet6: [ON, OFF]
	sctp_inet: [ON, OFF]
	sctp_debug: [ON, OFF]

	runs-on: ${{ matrix.platform }}

	steps:
	- uses: actions/checkout@v2
	with:
	path: 'usrsctp_source'

	- name: Prepare dirs
	shell: bash
	run: \|
	mkdir -p cmake_build
	mkdir -p cmake_install

	- name: Generate CMake project
	shell: bash
	run: \|
	cd cmake_build
	cmake -DCMAKE_BUILD_TYPE=${{ matrix.cmake_build_type }} \
	-DCMAKE_POSITION_INDEPENDENT_CODE=ON \
	-DCMAKE_VERBOSE_MAKEFILE:BOOL=ON \
	-Dsctp_debug=${{ matrix.sctp_debug }} \
	-Dsctp_invariants=${{ matrix.sctp_invariants }} \
	-Dsctp_inet6=${{ matrix.sctp_inet6 }} \
	-Dsctp_inet=${{ matrix.sctp_inet }} \
	-Dsctp_build_programs=ON \
	-Dsctp_build_fuzzer=OFF \
	-DCMAKE_INSTALL_PREFIX=${GITHUB_WORKSPACE}/cmake_install \
	${GITHUB_WORKSPACE}/usrsctp_source

	- name: Build and install project
	shell: bash
	run: \|
	cmake --build cmake_build \
	--parallel 2 \
	--config ${{ matrix.cmake_build_type }} \
	--target install \
	--clean-first

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