error handling in watchbsp (contributed by ilm)

git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/branches/ZeroRadiant@250 8a3a26a2-13c4-0310-b231-cf6edde360e5

libs/l_net/l_net.c

@@ -346,7 +346,9 @@ void Net_MyAddress(address_t *address)
 //===========================================================================
 int Net_Setup(void)
 {
-	WINS_Init();
+	if( !WINS_Init() )
+		return qfalse;
+
 	//
 	WinPrint("my address is %s\n", WINS_MyAddress());
 	//

libs/l_net/l_net_berkeley.c

@@ -175,6 +175,14 @@ int WINS_Init(void)
 	// determine my name & address
 	gethostname(buff, MAXHOSTNAMELEN);
 	local = gethostbyname(buff);
+
+	// When hostname can not be resolved, return gracefully
+	if( local == 0 )
+ 	{
+		WinError("WINS_Init: Unable to resolve hostname\n");
+		return 0;
+	}
+
 	myAddr = *(int *)local->h_addr_list[0];
 
 	// if the quake hostname isn't set, set it to the machine name

radiant/watchbsp.cpp

@@ -305,10 +305,13 @@ bool CWatchBSP::SetupListening()
   }
 #endif
   Sys_Printf("Setting up\n");
-	Net_Setup();
-	m_pListenSocket = Net_ListenSocket(39000);
+  if( !Net_Setup() )
+    return false;
+
+  m_pListenSocket = Net_ListenSocket(39000);
   if (m_pListenSocket == NULL)
     return false;
+
   Sys_Printf("Listening...\n");
   return true;
 }