[gnome-todo] task-list-view: reset dnd row when removing a task

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 4b50aa982b6c28a7414417e2c25c9fca4f14f9ed
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Wed Oct 26 00:18:05 2016 -0200

    task-list-view: reset dnd row when removing a task
    
    Avoid a nasty segmentation fault.

 src/gtd-task-list-view.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/src/gtd-task-list-view.c b/src/gtd-task-list-view.c
index 54ea640..2f53586 100644
--- a/src/gtd-task-list-view.c
+++ b/src/gtd-task-list-view.c
@@ -637,6 +637,12 @@ gtd_task_list_view__remove_task_cb (GtdEditPane *pane,
                     remove_task_from_list,
                     FALSE);
 
+  /*
+   * Reset the DnD row, to avoid getting into an inconsistent state where
+   * the DnD row points to a row that is not present anymore.
+   */
+  gtd_dnd_row_set_row_above (GTD_DND_ROW (priv->dnd_row), NULL);
+
   /* Hide the edit panel */
   gtk_revealer_set_reveal_child (priv->edit_revealer, FALSE);