[gnome-calendar] month-view: fix date adjust mishap

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

commit c67d52092c01c44618004748c2fcd8e944981341
Author: fosero <fosero users noreply github com>
Date:   Fri Mar 11 13:55:34 2016 +0100

    month-view: fix date adjust mishap
    
    https://bugzilla.gnome.org/show_bug.cgi?id=763015

 src/gcal-month-view.c |    6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)
---
diff --git a/src/gcal-month-view.c b/src/gcal-month-view.c
index 59d9c42..6574f6e 100644
--- a/src/gcal-month-view.c
+++ b/src/gcal-month-view.c
@@ -515,11 +515,7 @@ rebuild_popover_for_day (GcalMonthView *view,
                                   day,
                                   0, 0, 0);
 
-      dt_end = g_date_time_new (tz,
-                                g_date_time_get_year (current_date),
-                                g_date_time_get_month (current_date),
-                                day + 1,
-                                0, 0, 0);
+      dt_end = g_date_time_add_days (dt_start, 1);
 
       for (; l != NULL; l = g_list_next (l))
         {