UdpTransport:IsIpAddressValid: Added extra :: check for ipv6

webrtc/voice_engine/test/channel_transport/udp_transport_impl.cc

Index: webrtc/voice_engine/test/channel_transport/udp_transport_impl.cc
diff --git a/webrtc/voice_engine/test/channel_transport/udp_transport_impl.cc b/webrtc/voice_engine/test/channel_transport/udp_transport_impl.cc
index e265c1e84c3aeea6bf09d74f46309e9b5ac3e7f2..c44cf9e17258caeb61844f984886a04b2a89b376 100644
--- a/webrtc/voice_engine/test/channel_transport/udp_transport_impl.cc
+++ b/webrtc/voice_engine/test/channel_transport/udp_transport_impl.cc
@@ -2875,6 +2875,10 @@ bool UdpTransport::IsIpAddressValid(const char* ipadr, const bool ipV6)
         {
             return false;
         }
+        if(nColons < 7 && nDubbleColons == 0)
+        {
+          return false;
+        }
         if(!(nDots == 3 || nDots == 0))
         {
             return false;