[riot-notifications] [RIOT-OS/RIOT] gnrc_ipv6_ext_frag: check return value of msg_try_send() (#15526)

[Martine Lenders]

@miri64 commented on this pull request.



> @@ -255,7 +255,12 @@ void gnrc_ipv6_ext_frag_send(gnrc_ipv6_ext_frag_send_t *snd_buf)
     /* tell gnrc_ipv6 to send the above prepared fragment */
     msg.type = GNRC_IPV6_EXT_FRAG_SEND;
     msg.content.ptr = to_send;
-    msg_try_send(&msg, gnrc_ipv6_pid);
+    if (msg_try_send(&msg, gnrc_ipv6_pid) <= 0) {
+        DEBUG("ipv6_ext_frag: Unable to send fragment, canceling fragmentation\n");
+        gnrc_pktbuf_release(to_send);
+        _snd_buf_free(snd_buf);
+        return;

Of course!

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