[glib] gslice: Prototype G_ENABLE_DEBUG function that's part of ABI

[Colin Walters <walters src gnome org>]

commit 488cdb13f60273a944a6b9f0c22e233f43c7e00f
Author: Colin Walters <walters verbum org>
Date:   Thu Nov 1 19:38:09 2012 -0400

    gslice: Prototype G_ENABLE_DEBUG function that's part of ABI
    
    Sadly, g_slice_debug_tree_statistics is conditionally part of the
    public ABI.  We might as well make it conditionally part of the API as
    well, even though this will require people actually using it to
    
    https://bugzilla.gnome.org/show_bug.cgi?id=687385

 glib/gslice.h |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/glib/gslice.h b/glib/gslice.h
index 3efd645..7e0c5b1 100644
--- a/glib/gslice.h
+++ b/glib/gslice.h
@@ -85,6 +85,10 @@ gint64   g_slice_get_config	   (GSliceConfig ckey);
 GLIB_DEPRECATED_IN_2_34
 gint64*  g_slice_get_config_state  (GSliceConfig ckey, gint64 address, guint *n_values);
 
+#ifdef G_ENABLE_DEBUG
+void     g_slice_debug_tree_statistics (void);
+#endif
+
 G_END_DECLS
 
 #endif /* __G_SLICE_H__ */