Bug 835343 - Correctly free the linked list in freeifaddrs. r=jesup

--HG--
extra : transplant_source : %9F%08%8F%CD%80%80%1C%88%AE%B3%92%1AN%17%0F%16%3Dp-%B1
Bug 834395 - Disable INET6 everywhere in Android SCTP. r=jesup

--HG--
extra : transplant_source : %0C%1C%97%AEF%03%60%85%5Cj%CE%AF%C6%FE%A8i%80%E7%23%A1