[evolution] I#533 - Task table tooltip ignores the timezone of the DUE property

[Milan Crha <mcrha src gnome org>]

commit d42fea4f2dbc5430afe737903d2d0546bea8081f
Author: Milan Crha <mcrha redhat com>
Date:   Fri Jul 12 12:05:14 2019 +0200

    I#533 - Task table tooltip ignores the timezone of the DUE property
    
    Closes https://gitlab.gnome.org/GNOME/evolution/issues/533

 src/calendar/gui/e-task-table.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
---
diff --git a/src/calendar/gui/e-task-table.c b/src/calendar/gui/e-task-table.c
index 47e7612e34..d1e5a24425 100644
--- a/src/calendar/gui/e-task-table.c
+++ b/src/calendar/gui/e-task-table.c
@@ -803,6 +803,20 @@ task_table_query_tooltip (GtkWidget *widget,
                g_free (str);
        }
 
+       if (dtdue && e_cal_component_datetime_get_tzid (dtdue)) {
+               zone = i_cal_component_get_timezone (
+                       e_cal_component_get_icalcomponent (new_comp),
+                       e_cal_component_datetime_get_tzid (dtdue));
+               if (!zone) {
+                       if (!e_cal_client_get_timezone_sync (comp_data->client, 
e_cal_component_datetime_get_tzid (dtdue), &zone, NULL, NULL))
+                               zone = NULL;
+               }
+               if (!zone)
+                       zone = default_zone;
+       } else {
+               zone = NULL;
+       }
+
        if (dtdue && e_cal_component_datetime_get_value (dtdue)) {
                gchar *str;