[gnome-calendar] month-cell: only update label when date changes

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

commit 5977eeefc8beeacd07eb88767252bcbf02a3080b
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Tue Oct 31 01:11:26 2017 -0200

    month-cell: only update label when date changes
    
    If the date is the same, we don't need to update the label.
    This might cause an infinite resize loop.

 src/views/gcal-month-cell.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/views/gcal-month-cell.c b/src/views/gcal-month-cell.c
index d9246ff..623fd3a 100644
--- a/src/views/gcal-month-cell.c
+++ b/src/views/gcal-month-cell.c
@@ -470,6 +470,9 @@ gcal_month_cell_set_date (GcalMonthCell *self,
 
   g_return_if_fail (GCAL_IS_MONTH_CELL (self));
 
+  if (self->date && date && datetime_compare_date (self->date, date) == 0)
+    return;
+
   gcal_clear_datetime (&self->date);
   self->date = g_date_time_ref (date);