avoid warning with some java apps sending an odd message to the tray

git-svn-id: https://xpra.org/svn/Xpra/trunk@9198 3bb7dfac-3a0b-4e04-842a-767bc560f471

src/xpra/x11/gtk_x11/tray.py

@@ -62,6 +62,9 @@
 #TRANSPARENCY = False
 TRANSPARENCY = True
 
+#Java can send this message to the tray (no idea why):
+IGNORED_MESSAGE_TYPES = ("_GTK_LOAD_ICONTHEMES", )
+
 
 def get_tray_window(tray_window):
     return tray_window.get_data(XPRA_TRAY_WINDOW_PROPERTY)
@@ -177,6 +180,8 @@ def do_xpra_client_message_event(self, event):
         elif event.message_type=="_NET_SYSTEM_TRAY_MESSAGE_DATA":
             assert event.format==8
             log.info("tray message data - not handled yet!")
+        elif event.message_type in IGNORED_MESSAGE_TYPES:
+            log("do_xpra_client_message_event(%s) in ignored message type list", event)
         else:
             log.info("do_xpra_client_message_event(%s)", event)