refs #546, allows to run on Win10 without DirectX

Does not fix that it is asked to install DX, but avoids the crash if installation is denied

src/plugins/simulator/fs9/lobbyclient.cpp

@@ -89,6 +89,7 @@ namespace BlackSimPlugin
 
         bool CLobbyClient::canLobbyConnect()
         {
+            if (!m_dpLobbyClient) { return false; }
             GUID appGuid = CFs9Sdk::guid();
             DWORD dwSize = 0;
             DWORD dwItems = 0;