prevent an unlikely race between "new-window" and "draw" packets: que…

…ue the draw requests via idle_add so that the new-window packets will always be processed before we get the draw request (which needs window to draw on)

git-svn-id: https://xpra.org/svn/Xpra/trunk@2662 3bb7dfac-3a0b-4e04-842a-767bc560f471

src/xpra/client.py

@@ -318,12 +318,12 @@ def init_packet_handlers(self):
             "desktop_size":         self._process_desktop_size,
             "window-icon":          self._process_window_icon,
             "sound-data":           self._process_sound_data,
+            "draw":                 self._process_draw,
             # "clipboard-*" packets are handled by a special case below.
             }.items():
             self._ui_packet_handlers[k] = v
         #these handlers can run directly from the network thread:
         for k,v in {
-            "draw":                 self._process_draw,
             "ping":                 self._process_ping,
             "ping_echo":            self._process_ping_echo,
             "info-response":        self._process_info_response,