[gimp] GtkInputDialog is deprecated now, so #undef GTK_DISABLE_DEPRECATED

[Michael Natterer <mitch src gnome org>]

commit 0b712fb4e54cf45864886c26f809f9eeeb2398a9
Author: Michael Natterer <mitch gimp org>
Date:   Mon Oct 19 10:11:45 2009 +0200

    GtkInputDialog is deprecated now, so #undef GTK_DISABLE_DEPRECATED
    
    Finally the reason needed to reimplement this beast in a proper way in
    GIMP.

 app/dialogs/preferences-dialog.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/app/dialogs/preferences-dialog.c b/app/dialogs/preferences-dialog.c
index b3f1c8d..1f1dddb 100644
--- a/app/dialogs/preferences-dialog.c
+++ b/app/dialogs/preferences-dialog.c
@@ -19,6 +19,7 @@
 
 #include <string.h>
 
+#undef GTK_DISABLE_DEPRECATED /* GtkInputDialog */
 #undef GSEAL_ENABLE
 
 #include <gtk/gtk.h>