[evolution] Tasks: Ensure ICalTime::zone is set for current time

[Milan Crha <mcrha src gnome org>]

commit df3b39156650eb6bcb1e8537e343c64fee974b01
Author: Milan Crha <mcrha redhat com>
Date:   Wed May 11 14:27:17 2022 +0200

    Tasks: Ensure ICalTime::zone is set for current time
    
    Without having set correct time zone for the ICalTime the conversion
    routines can convert time twice into the destination time zone,
    which causes wrong time. It could be seen also when comparing
    the current time with the component time.
    
    Related to https://github.com/libical/libical/issues/571

 src/calendar/gui/e-cal-model-tasks.c | 1 +
 src/calendar/gui/e-to-do-pane.c      | 3 +++
 2 files changed, 4 insertions(+)
---
diff --git a/src/calendar/gui/e-cal-model-tasks.c b/src/calendar/gui/e-cal-model-tasks.c
index 44134cbebd..897481d806 100644
--- a/src/calendar/gui/e-cal-model-tasks.c
+++ b/src/calendar/gui/e-cal-model-tasks.c
@@ -363,6 +363,7 @@ get_due_status (ECalModelTasks *model,
                        }
 
                        now_tt = i_cal_time_new_current_with_zone (zone);
+                       i_cal_time_set_timezone (now_tt, zone);
 
                        if (i_cal_time_compare (due_tt, now_tt) <= 0)
                                res = E_CAL_MODEL_TASKS_DUE_OVERDUE;
diff --git a/src/calendar/gui/e-to-do-pane.c b/src/calendar/gui/e-to-do-pane.c
index 788fdf7e4d..5a71381e2f 100644
--- a/src/calendar/gui/e-to-do-pane.c
+++ b/src/calendar/gui/e-to-do-pane.c
@@ -906,6 +906,7 @@ etdp_get_comp_colors (EToDoPane *to_do_pane,
                        etdp_itt_to_zone (itt, e_cal_component_datetime_get_tzid (dt), client, default_zone);
 
                        now = i_cal_time_new_current_with_zone (default_zone);
+                       i_cal_time_set_timezone (now, default_zone);
 
                        if ((is_date && i_cal_time_compare_date_only (itt, now) <= 0) ||
                            (!is_date && i_cal_time_compare (itt, now) <= 0)) {
@@ -1485,6 +1486,7 @@ etdp_check_time_changed (EToDoPane *to_do_pane,
 
        zone = e_cal_data_model_get_timezone (to_do_pane->priv->events_data_model);
        itt = i_cal_time_new_current_with_zone (zone);
+       i_cal_time_set_timezone (itt, zone);
        new_today = etdp_create_date_mark (itt);
 
        if (force_update || new_today != to_do_pane->priv->last_today) {
@@ -1924,6 +1926,7 @@ etdp_new_common (EToDoPane *to_do_pane,
                                time_divisions_secs = g_settings_get_int (settings, "time-divisions") * 60;
                                zone = e_cal_data_model_get_timezone (to_do_pane->priv->events_data_model);
                                now = i_cal_time_new_current_with_zone (zone);
+                               i_cal_time_set_timezone (now, zone);
 
                                i_cal_time_set_year (now, date_mark / 10000);
                                i_cal_time_set_month (now, (date_mark / 100) % 100);