[gtk+] Move mark check to gtk_text_view_scroll_to_mark()

[Kristian Rietveld <kristian src gnome org>]

commit dcc87f7a6786065b919516b7c806e3f33c5c10a3
Author: Kristian Rietveld <kris gtk org>
Date:   Fri Sep 4 16:38:04 2009 +0200

    Move mark check to gtk_text_view_scroll_to_mark()
    
    Also use a different means to check that the given mark is in the text
    view's buffer.  This will also play nice with anonymous and NULL marks.
    Suggested by Paolo Borelli.

 gtk/gtktextview.c |   12 +++++-------
 1 files changed, 5 insertions(+), 7 deletions(-)
---
diff --git a/gtk/gtktextview.c b/gtk/gtktextview.c
index 72d7fe3..ad9cba0 100644
--- a/gtk/gtktextview.c
+++ b/gtk/gtktextview.c
@@ -1900,7 +1900,6 @@ gtk_text_view_queue_scroll (GtkTextView   *text_view,
                             gdouble        xalign,
                             gdouble        yalign)
 {
-  const char *mark_name;
   GtkTextIter iter;
   GtkTextPendingScroll *scroll;
 
@@ -1913,12 +1912,6 @@ gtk_text_view_queue_scroll (GtkTextView   *text_view,
   scroll->xalign = xalign;
   scroll->yalign = yalign;
   
-  /* We need to verify that the buffer contains the mark, otherwise this
-   * can lead to data structure corruption later on.
-   */
-  mark_name = gtk_text_mark_get_name (mark);
-  g_return_if_fail (gtk_text_buffer_get_mark (get_buffer (text_view), mark_name));
-
   gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, mark);
 
   scroll->mark = gtk_text_buffer_create_mark (get_buffer (text_view),
@@ -2167,6 +2160,11 @@ gtk_text_view_scroll_to_mark (GtkTextView *text_view,
   g_return_if_fail (xalign >= 0.0 && xalign <= 1.0);
   g_return_if_fail (yalign >= 0.0 && yalign <= 1.0);
 
+  /* We need to verify that the buffer contains the mark, otherwise this
+   * can lead to data structure corruption later on.
+   */
+  g_return_if_fail (get_buffer (text_view) == gtk_text_mark_get_buffer (mark));
+
   gtk_text_view_queue_scroll (text_view, mark,
                               within_margin,
                               use_align,