Fix UDP listen on a Unspecified Address and Dial from the Unspecified Address
Fix UDP listen on a Unspecified Address and Dial from the Unspecified Address

LocalMultiaddr May return the Unspecified Address, if so, we need to
check if we listen on the Unspecified address and they were equal.

ipfs/go-libp2p,libp2p/go-libp2p,libp2p/go-libp2p