fix flaky reconnect test (#1406)
fix flaky reconnect test (#1406)

* don't run the reconnect test using TCP on OSX

Due to https://github.com/golang/go/issues/50254.

* don't check the error return value when closing stream in reconnect test
ipfs/go-libp2p,libp2p/go-libp2p,libp2p/go-libp2p