[gedit] Fix compilation warning

[Sébastien Wilmet <swilmet src gnome org>]

commit 44aee7fff8b2761cb4ce0264af49394b2f585fcc
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Apr 4 12:50:00 2015 +0200

    Fix compilation warning

 gedit/gedit-commands-search.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gedit/gedit-commands-search.c b/gedit/gedit-commands-search.c
index c170968..2b1411b 100644
--- a/gedit/gedit-commands-search.c
+++ b/gedit/gedit-commands-search.c
@@ -460,7 +460,7 @@ do_replace_all (GeditReplaceDialog *dialog,
 
        buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
 
-       search_context = gedit_document_get_search_context (GTK_SOURCE_BUFFER (buffer));
+       search_context = gedit_document_get_search_context (GEDIT_DOCUMENT (buffer));
 
        if (search_context == NULL)
        {