dpif-netlink: Fix report_loss() message.

Fixes: 1579cf6 ("dpif-linux: Implement the API functions to allow multiple handler threads read upcall.")
Signed-off-by: Mark Gray <mark.d.gray@redhat.com>
Acked-by: Flavio Leitner <fbl@sysclose.org>
Acked-by: Aaron Conole <aconole@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>

lib/dpif-netlink.c

@@ -4676,7 +4676,7 @@ report_loss(struct dpif_netlink *dpif, struct dpif_channel *ch, uint32_t ch_idx,
                       time_msec() - ch->last_poll);
     }
 
-    VLOG_WARN("%s: lost packet on port channel %u of handler %u",
-              dpif_name(&dpif->dpif), ch_idx, handler_id);
+    VLOG_WARN("%s: lost packet on port channel %u of handler %u%s",
+              dpif_name(&dpif->dpif), ch_idx, handler_id, ds_cstr(&s));
     ds_destroy(&s);
 }