Register sockstub protocol.

network/module/nsHttpURLFactory.cpp

@@ -108,6 +108,8 @@ NS_InitializeHttpURLFactory(nsINetService* inet)
     if (rv != NS_OK) goto done;
     inet->RegisterProtocol(*new nsString("javascript"), urlf, NULL);
     if (rv != NS_OK) goto done;
+	inet->RegisterProtocol(*new nsString("sockstub"), urlf, NULL);
+	if (rv != NS_OK) goto done;
 
   done:
 #if 0