[gitg] Fix getting iter at location

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 17c3d47e0bb8db0965d5e7f776fc71c33fe73d96
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Sun Dec 20 19:40:13 2015 +0100

    Fix getting iter at location

 libgitg/gitg-diff-view-file-selectable.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgitg/gitg-diff-view-file-selectable.vala b/libgitg/gitg-diff-view-file-selectable.vala
index 83653b4..8399c74 100644
--- a/libgitg/gitg-diff-view-file-selectable.vala
+++ b/libgitg/gitg-diff-view-file-selectable.vala
@@ -278,7 +278,7 @@ class Gitg.DiffViewFileSelectable : Object
                int win_x, win_y;
 
                source_view.window_to_buffer_coords(Gtk.TextWindowType.TEXT, x, y, out win_x, out win_y);
-               source_view.get_iter_at_location(out iter, win_x, win_y);
+               source_view.get_line_at_y(out iter, win_y, null);
 
                return true;
        }