[gnome-flashback] notifications: use g_memdup2

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 153d1dacb2e9242525c0f33d412fb38cfeae6e46
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sun Mar 14 15:49:30 2021 +0200

    notifications: use g_memdup2

 gnome-flashback/libnotifications/nd-notification.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gnome-flashback/libnotifications/nd-notification.c 
b/gnome-flashback/libnotifications/nd-notification.c
index e406bfb..77b5255 100644
--- a/gnome-flashback/libnotifications/nd-notification.c
+++ b/gnome-flashback/libnotifications/nd-notification.c
@@ -237,8 +237,8 @@ icon_from_data (GVariant *icon_data)
                 return NULL;
         }
 
-        data = (guchar *) g_memdup (g_variant_get_data (data_variant),
-                                    g_variant_get_size (data_variant));
+        data = g_memdup2 (g_variant_get_data (data_variant),
+                          g_variant_get_size (data_variant));
 
         pixbuf = gdk_pixbuf_new_from_data (data,
                                            GDK_COLORSPACE_RGB,