Fix active tcp port to 9

webrtc/p2p/base/tcpport.cc

Index: webrtc/p2p/base/tcpport.cc
diff --git a/webrtc/p2p/base/tcpport.cc b/webrtc/p2p/base/tcpport.cc
index 2590d0aca893610551ab9af824701361afb27371..ab1d586c525f823d62d20a516192178d97b008e6 100644
--- a/webrtc/p2p/base/tcpport.cc
+++ b/webrtc/p2p/base/tcpport.cc
@@ -185,9 +185,10 @@ void TCPPort::PrepareAddress() {
     LOG_J(LS_INFO, this) << "Not listening due to firewall restrictions.";
     // Note: We still add the address, since otherwise the remote side won't
     // recognize our incoming TCP connections.
-    AddAddress(rtc::SocketAddress(ip(), 0), rtc::SocketAddress(ip(), 0),
-               rtc::SocketAddress(), TCP_PROTOCOL_NAME, "", TCPTYPE_ACTIVE_STR,
-               LOCAL_PORT_TYPE, ICE_TYPE_PREFERENCE_HOST_TCP, 0, true);
+    AddAddress(rtc::SocketAddress(ip(), DISCARD_PORT),

[pthatcher1, 2015/11/11 20:06:24]

Can you please leave a comment explaining why DISCARD_PORT is used here?  It's
not very obvious for just looking at the code.

+               rtc::SocketAddress(ip(), 0), rtc::SocketAddress(),
+               TCP_PROTOCOL_NAME, "", TCPTYPE_ACTIVE_STR, LOCAL_PORT_TYPE,
+               ICE_TYPE_PREFERENCE_HOST_TCP, 0, true);
   }
 }