[gtk+] css: Add const to _gtk_css_selector_tree_match_all arg

[Alexander Larsson <alexl src gnome org>]

commit 42716cb60f834cb3ff8b409aec670c3ec386f4d5
Author: Alexander Larsson <alexl redhat com>
Date:   Thu Nov 29 17:55:26 2012 +0100

    css: Add const to _gtk_css_selector_tree_match_all arg

 gtk/gtkcssselector.c        |    2 +-
 gtk/gtkcssselectorprivate.h |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkcssselector.c b/gtk/gtkcssselector.c
index ee0b656..a0ef7ae 100644
--- a/gtk/gtkcssselector.c
+++ b/gtk/gtkcssselector.c
@@ -1699,7 +1699,7 @@ direct_ptr_compare (const void *_a, const void *_b)
 }
 
 GPtrArray *
-_gtk_css_selector_tree_match_all (GtkCssSelectorTree *tree,
+_gtk_css_selector_tree_match_all (const GtkCssSelectorTree *tree,
 				  const GtkCssMatcher *matcher)
 {
   GHashTable *res;
diff --git a/gtk/gtkcssselectorprivate.h b/gtk/gtkcssselectorprivate.h
index be02aee..cc7ec4b 100644
--- a/gtk/gtkcssselectorprivate.h
+++ b/gtk/gtkcssselectorprivate.h
@@ -40,7 +40,7 @@ int               _gtk_css_selector_compare         (const GtkCssSelector   *a,
                                                      const GtkCssSelector   *b);
 
 void         _gtk_css_selector_tree_free             (GtkCssSelectorTree       *tree);
-GPtrArray *  _gtk_css_selector_tree_match_all        (GtkCssSelectorTree       *tree,
+GPtrArray *  _gtk_css_selector_tree_match_all        (const GtkCssSelectorTree *tree,
 						      const GtkCssMatcher      *matcher);
 void         _gtk_css_selector_tree_match_print      (const GtkCssSelectorTree *tree,
 						      GString                  *str);