[planner] Fix column visibility in task view

[Alexandre Franke <afranke src gnome org>]

commit 1a68e275a1a82fd47a7dca3105d5ea0d917ac158
Author: Alexandre Franke <afranke gnome org>
Date:   Fri Mar 16 09:48:52 2018 +0100

    Fix column visibility in task view
    
    Fixes https://bugzilla.gnome.org/show_bug.cgi?id=793642

 src/planner-task-view.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/planner-task-view.c b/src/planner-task-view.c
index 4e9977e..df4d2fb 100644
--- a/src/planner-task-view.c
+++ b/src/planner-task-view.c
@@ -851,7 +851,7 @@ task_view_load_columns (PlannerView *view)
                            strcmp (id, "slack") == 0 ||
                            strcmp (id, "cost") == 0 ||
                            strcmp (id, "complete") == 0 ||
-                           strcmp (id, "assigned-to")) {
+                           strcmp (id, "assigned-to") == 0) {
                                gtk_tree_view_column_set_visible (column, TRUE);
                        } else {
                                gtk_tree_view_column_set_visible (column, FALSE);