[gnome-builder/editor-layout] use helper for scrolling so we can add work arounds for gtk bugs

[Christian Hergert <chergert src gnome org>]

commit b6d4e8316e3a9b5f7953fa198a335c22d056e9b5
Author: Christian Hergert <christian hergert me>
Date:   Sun Nov 30 02:32:20 2014 -0800

    use helper for scrolling so we can add work arounds for gtk bugs

 src/editor/gb-source-view.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/src/editor/gb-source-view.c b/src/editor/gb-source-view.c
index e84f739..a5e4f8a 100644
--- a/src/editor/gb-source-view.c
+++ b/src/editor/gb-source-view.c
@@ -30,6 +30,7 @@
 #include "gb-box-theatric.h"
 #include "gb-cairo.h"
 #include "gb-editor-document.h"
+#include "gb-gtk.h"
 #include "gb-log.h"
 #include "gb-source-auto-indenter.h"
 #include "gb-source-search-highlighter.h"
@@ -631,12 +632,16 @@ gb_source_view_scroll_to_insert (GbSourceView *view)
 {
   GtkTextBuffer *buffer;
   GtkTextMark *mark;
+  GtkTextIter iter;
 
   g_return_if_fail (GB_IS_SOURCE_VIEW (view));
 
   buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
   mark = gtk_text_buffer_get_insert (buffer);
-  gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (view), mark, 0.0, FALSE, 0, 0);
+  gtk_text_buffer_get_iter_at_mark (buffer, &iter, mark);
+
+  gb_gtk_text_view_scroll_to_iter (GTK_TEXT_VIEW (view), &iter,
+                                   0.0, FALSE, 0.0, 0.0);
 }
 
 void