Bug 41459: WebRTC fails to build under mingw (Part 4)

netwerk/sctp/src/moz.build

netwerk/sctp/src/netinet/sctp_cc_functions.c

netwerk/sctp/src/netinet/sctp_indata.c

netwerk/sctp/src/netinet/sctp_input.c

netwerk/sctp/src/netinet/sctp_output.c

netwerk/sctp/src/netinet/sctp_usrreq.c

netwerk/sctp/src/netinet/sctputil.c

netwerk/sctp/src/user_mbuf.c

netwerk/sctp/src/user_socket.c