[gtk+] treeview: Fix row drag icon offsets

[Matthias Clasen <matthiasc src gnome org>]

commit 2c3ec495352d634478a4664ae6f7775b5322463b
Author: Timm Bäder <mail baedert org>
Date:   Sun Jul 16 09:37:17 2017 +0200

    treeview: Fix row drag icon offsets

 gtk/gtktreeview.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtktreeview.c b/gtk/gtktreeview.c
index 5ea1618..1ac489b 100644
--- a/gtk/gtktreeview.c
+++ b/gtk/gtktreeview.c
@@ -7576,8 +7576,8 @@ gtk_tree_view_drag_begin (GtkWidget      *widget,
                                                 path);
   cairo_surface_set_device_offset (row_pix,
                                    /* the + 1 is for the black border in the icon */
-                                   - (tree_view->priv->press_start_x + 1),
-                                   - (cell_y + 1));
+                                   tree_view->priv->press_start_x + 1,
+                                   1);
 
   gtk_drag_set_icon_surface (context, row_pix);