[core] Fixed getting SRTO_RCVBUF and SRTO_SNDBUF on a group. #362

	name: ABI checks

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	env:
	SRT_BASE: v1.5.0

	jobs:
	build:
	name: ABI checks
	runs-on: ubuntu-20.04

	steps:
	- uses: actions/checkout@v3
	with:
	path: pull_request
	- name: configure
	run: \|
	cd pull_request
	mkdir _build && cd _build
	cmake -DCMAKE_BUILD_TYPE=Debug -DENABLE_UNITTESTS=ON ../
	- name: build
	run: \|
	sudo apt install -y abi-dumper
	cd pull_request/_build && cmake --build ./
	make install DESTDIR=./installdir
	SRT_TAG_VERSION=$(cat version.h \|grep SRT_VERSION_MINOR \|head -n1 \|awk {'print $3'})
	abi-dumper libsrt.so -o libsrt-pr.dump -public-headers installdir/usr/local/include/srt/ -lver 0
	SRT_BASE="v1.$SRT_TAG_VERSION.0"
	echo "SRT_BASE=$SRT_BASE" >> "$GITHUB_ENV"
	- uses: actions/checkout@v3
	with:
	path: tag
	ref: ${{ env.SRT_BASE }}
	- name: configure_tag
	run: \|
	echo $SRT_TAG_VERSION
	cd tag
	mkdir _build && cd _build
	cmake -DCMAKE_BUILD_TYPE=Debug -DENABLE_UNITTESTS=ON ../
	- name: build_tag
	run: \|
	cd tag
	cd _build && cmake --build ./
	make install DESTDIR=./installdir
	abi-dumper libsrt.so -o libsrt-tag.dump -public-headers installdir/usr/local/include/srt/ -lver 1
	- name: abi-check
	run: \|
	git clone https://github.com/lvc/abi-compliance-checker.git
	cd abi-compliance-checker && sudo make install && cd ../
	abi-compliance-checker -l libsrt -old tag/_build/libsrt-tag.dump -new pull_request/_build/libsrt-pr.dump
	RES=$?
	if (( $RES != 0 ))
	then
	echo "ABI/API Compatibility check failed with value $?"
	exit $RES
	fi

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