Fix ServerConnection global (Hello was never sent)

client.cs

@@ -59,7 +59,7 @@ function RPGClient_Aspect()
 
 function RPGClient_SendClick(%button, %pos)
 {
-	if (!isObject(serverConnection))
+	if (!isObject(ServerConnection))
 	{
 		return;
 	}
@@ -204,7 +204,7 @@ function RPGClient_ZoomOut(%val)
 
 function RPGClient_SendHello()
 {
-	if (!isObject(serverConnection))
+	if (!isObject(ServerConnection))
 	{
 		return;
 	}
@@ -222,6 +222,10 @@ function clientCmdRPG_Welcome(%serverProto, %accepted)
 	{
 		$RPGClient::Server = 1;
 	}
+	else if (!%accepted)
+	{
+		echo("Client_RPG: server rejected handshake (server proto " @ %serverProto @ ")");
+	}
 }
 
 function clientCmdRPG_TopDown(%on, %yaw, %dist)