Description: Fix FTBFS: Replace 'GtkFunction'.
 Cf. README
Author: Andreas Moog
Reviewed-by: gregor herrmann <gregoa@debian.org>
Reviewed-by: Andreas B. Mundt <andi@debian.org>
Last-Update: 2013-08-15

--- a/src/gui/calc/calc.c
+++ b/src/gui/calc/calc.c
@@ -586,7 +586,7 @@
 
     // Install LCD refresh: 100 FPS (10 ms)
     tid = g_timeout_add((params.lcd_rate == -1) ? 50 : params.lcd_rate, 
-		(GtkFunction)hid_refresh, NULL);
+		(GSourceFunc)hid_refresh, NULL);
 
 	explicit_destroy = 0;
 	gtk_widget_show(main_wnd);	// show wnd here
@@ -640,7 +640,7 @@
 	g_source_remove(tid);
 
 	tid = g_timeout_add((params.lcd_rate == -1) ? 50 : params.lcd_rate, 
-		(GtkFunction)hid_refresh, NULL);
+		(GSourceFunc)hid_refresh, NULL);
 }
 
 int hid_switch_with_skin(void)
