Stop trying to send ListConnInfo via WM_COPYDATA

Windows tries to do a copy of it, and it is too complex to survive
that. Just reference the object directly as we know the source of
the message here.
diff --git a/win/winvnc/STrayIcon.cxx b/win/winvnc/STrayIcon.cxx
index fa483ee..a90819d 100644
--- a/win/winvnc/STrayIcon.cxx
+++ b/win/winvnc/STrayIcon.cxx
@@ -184,7 +184,7 @@
         case 2:
           return thread.server.disconnectClients("IPC disconnect") ? 1 : 0;
         case 3:
-          thread.server.setClientsStatus((ListConnInfo *)command->lpData);
+          thread.server.setClientsStatus(&CPanel->ListConnStatus);
         case 4:
           thread.server.getClientsInfo(&LCInfo);
           CPanel->UpdateListView(&LCInfo);