Fixed the background image for displaying the workspace name to be taken

from the same place as the name is displaying. It was still taken from the
middle of screen even if the name display place moved to top.

src/workspace.c

@@ -358,7 +358,7 @@ showWorkspaceName(WScreen *scr, int workspace)
 
     ximg = RGetXImage(scr->rcontext, scr->root_win, 
 		      (scr->scr_width - data->text->width)/2,
-		      (scr->scr_height - data->text->height)/2, 
+		      0 /* (scr->scr_height - data->text->height)/2 */,
 		      data->text->width, data->text->height);
 
     if (!ximg) {