fix unused variable
fix warning ('rc' may be used uninitialized in this function)
fix warning ('port' may be used uninitialized in this function)
fix warning ('ret' may be used uninitialized in this function)
Minor style fixes: fix-warnings branch.
Merge branch 'fix-warnings-stable' into stable
Add libiberty-dev in debian (instead binutils-dev | libiberty-dev)
Changed binutils-dev and debian-dev for different debian version
Changed binutils-dev and debian-dev for different debian version
Merge branch 'stable' of https://github.com/tarantool/tarantool into stable