fixes bug 220020 "PR_EnumerateAddrInfo should not special case port 0" r=wtc
fixes bug 220020 "PR_EnumerateAddrInfo should not special case port 0" r=wtc

makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub