[gnome-todo] task-list-view: plug some nasty crashers

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

commit 073168f990c9fe2e9b6e657719ce3a8c2bc8f363
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Wed Oct 5 21:09:13 2016 -0300

    task-list-view: plug some nasty crashers
    
    We should always check if the tasklist exists before trying to use it.

 src/gtd-task-list-view.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/gtd-task-list-view.c b/src/gtd-task-list-view.c
index ee89369..819de15 100644
--- a/src/gtd-task-list-view.c
+++ b/src/gtd-task-list-view.c
@@ -136,7 +136,7 @@ real_save_task (GtdTaskListView *self,
    */
   gtd_task_list_save_task (list, task);
 
-  if (priv->task_list != list)
+  if (priv->task_list != list && priv->task_list)
     gtd_task_list_save_task (priv->task_list, task);
 }
 
@@ -336,7 +336,7 @@ gtd_task_list_view__remove_task_cb (GtdEditPane *pane,
    * the task's list is different from the current list. We want to
    * remove the task from ~both~ lists.
    */
-  if (priv->task_list != list)
+  if (priv->task_list != list && priv->task_list)
     gtd_task_list_remove_task (priv->task_list, task);
 
   gtd_task_list_view__remove_row_for_task (GTD_TASK_LIST_VIEW (user_data), task);