[libgweather/ebassi/gtk4] Use G_DEFINE_BOXED_TYPE for GWeatherTimezone

[Emmanuele Bassi <ebassi src gnome org>]

commit aea3fc3f63700f7637279a2fff5f229e4a99d2ca
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue Oct 12 18:05:41 2021 +0100

    Use G_DEFINE_BOXED_TYPE for GWeatherTimezone
    
    Instead of writing the get_type() function ourselves.

 libgweather/gweather-timezone.c | 15 +--------------
 1 file changed, 1 insertion(+), 14 deletions(-)
---
diff --git a/libgweather/gweather-timezone.c b/libgweather/gweather-timezone.c
index afb04589..7b4327cc 100644
--- a/libgweather/gweather-timezone.c
+++ b/libgweather/gweather-timezone.c
@@ -243,20 +243,7 @@ gweather_timezone_unref (GWeatherTimezone *zone)
     }
 }
 
-GType
-gweather_timezone_get_type (void)
-{
-    static gsize type_volatile = 0;
-
-    if (g_once_init_enter (&type_volatile)) {
-       GType type = g_boxed_type_register_static (
-           g_intern_static_string ("GWeatherTimezone"),
-           (GBoxedCopyFunc) gweather_timezone_ref,
-           (GBoxedFreeFunc) gweather_timezone_unref);
-       g_once_init_leave (&type_volatile, type);
-    }
-    return type_volatile;
-}
+G_DEFINE_BOXED_TYPE (GWeatherTimezone, gweather_timezone, gweather_timezone_ref, gweather_timezone_unref)
 
 /**
  * gweather_timezone_get_utc: