[gssdp] net-posix: Disable deprecation warning

[Jens Georg <jensgeorg src gnome org>]

commit 41981fff1ac4e068acd679f4ef0551807db07f6d
Author: Jens Georg <mail jensge org>
Date:   Sun Jun 20 16:10:00 2021 +0200

    net-posix: Disable deprecation warning
    
    Used to fix deprecation warning for g_memdup2

 libgssdp/gssdp-net-posix.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/libgssdp/gssdp-net-posix.c b/libgssdp/gssdp-net-posix.c
index e98fd20..2525c67 100644
--- a/libgssdp/gssdp-net-posix.c
+++ b/libgssdp/gssdp-net-posix.c
@@ -202,7 +202,10 @@ gssdp_net_mac_lookup (GSSDPNetworkDevice *device, const char *ip_address)
                                         g_clear_pointer (&data, g_free);
                                         data_length = RTA_PAYLOAD (rtattr);
 #if GLIB_CHECK_VERSION(2, 68, 0)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
                                         data = g_memdup2 (RTA_DATA (rtattr), data_length);
+#pragma GCC diagnostic pop
 #else
                                         data = g_memdup (RTA_DATA (rtattr), data_length);
 #endif