wmspec.c: update _NET_CURRENT_DESKTOP at startup. Related to issue #497.

Author: trunkmaster

Applications/Workspace/WM/wmspec.c

@@ -678,6 +678,7 @@ void wNETWMInitStuff(WScreen *scr)
   updateClientListStacking(scr, NULL);
   updateDesktopCount(scr);
   updateDesktopNames(scr);
+  updateCurrentDesktop(scr);
   updateShowDesktop(scr, False);
 
   wScreenUpdateUsableArea(scr);