[gtk+] textlayout: avoid double-free when adding preedit color

[Daiki Ueno <dueno src gnome org>]

commit 837a0d3e4002e640be2aea2a67802c474997e354
Author: Daiki Ueno <ueno unixuser org>
Date:   Wed Jul 3 19:03:30 2013 +0900

    textlayout: avoid double-free when adding preedit color
    
    In add_preedit_attrs, don't free foreground/background colors already
    set in the underlying text attributes (style).  They will be free'd by
    release_style.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=703533

 gtk/gtktextlayout.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtktextlayout.c b/gtk/gtktextlayout.c
index f87714b..f72f384 100644
--- a/gtk/gtktextlayout.c
+++ b/gtk/gtktextlayout.c
@@ -1887,6 +1887,11 @@ add_preedit_attrs (GtkTextLayout     *layout,
        continue;
 
       pango_attr_iterator_get_font (iter, font_desc, &language, &extra_attrs);
+
+      if (appearance.rgba[0])
+       appearance.rgba[0] = gdk_rgba_copy (appearance.rgba[0]);
+      if (appearance.rgba[1])
+       appearance.rgba[1] = gdk_rgba_copy (appearance.rgba[1]);
       
       tmp_list = extra_attrs;
       while (tmp_list)
@@ -1947,6 +1952,11 @@ add_preedit_attrs (GtkTextLayout     *layout,
                          attrs, start + offset,
                          size_only, TRUE);
       
+      if (appearance.rgba[0])
+       gdk_rgba_free (appearance.rgba[0]);
+      if (appearance.rgba[1])
+       gdk_rgba_free (appearance.rgba[1]);
+
       pango_font_description_free (font_desc);
     }
   while (pango_attr_iterator_next (iter));