Properly terminate server on timeouts

Do a proper cleanup when one of the termination timeouts trigger
rather than just exiting on the spot. This makes sure we don't leave
stray stuff around, e.g. unix socket files.
diff --git a/win/winvnc/VNCServerWin32.cxx b/win/winvnc/VNCServerWin32.cxx
index 03b1bca..e001449 100644
--- a/win/winvnc/VNCServerWin32.cxx
+++ b/win/winvnc/VNCServerWin32.cxx
@@ -76,6 +76,7 @@
 
   // Register the desktop's event to be handled
   sockMgr.addEvent(desktop.getUpdateEvent(), &desktop);
+  sockMgr.addEvent(desktop.getTerminateEvent(), this);
 
   // Register the queued command event to be handled
   sockMgr.addEvent(commandEvent, this);
@@ -335,7 +336,8 @@
       command = NoCommand;
       commandSig->signal();
     }
-  } else if (event_ == sessionEvent.h) {
+  } else if ((event_ == sessionEvent.h) ||
+             (event_ == desktop.getTerminateEvent())) {
     stop();
   }
 }