[gssdp] net-posix: Replace g_memdup if available

[Jens Georg <jensgeorg src gnome org>]

commit ae442a2fd745c7cca7424a8b357789b6e6dbc253
Author: Jens Georg <mail jensge org>
Date:   Fri May 21 18:26:11 2021 +0200

    net-posix: Replace g_memdup if available

 libgssdp/gssdp-net-posix.c | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/libgssdp/gssdp-net-posix.c b/libgssdp/gssdp-net-posix.c
index 5ca8f7c..eb4b238 100644
--- a/libgssdp/gssdp-net-posix.c
+++ b/libgssdp/gssdp-net-posix.c
@@ -215,7 +215,11 @@ gssdp_net_mac_lookup (GSSDPNetworkDevice *device, const char *ip_address)
                                 } else if (rtattr->rta_type == NDA_LLADDR) {
                                         g_clear_pointer (&data, g_free);
                                         data_length = RTA_PAYLOAD (rtattr);
+#if GLIB_CHECK_VERSION(2, 68, 0)
+                                        data = g_memdup2 (RTA_DATA (rtattr), data_length);
+#else
                                         data = g_memdup (RTA_DATA (rtattr), data_length);
+#endif
                                 }
 
                                 rtattr = RTA_NEXT (rtattr, rtattr_len);