client/player: Fix scan-build warning

This fixes the following warning:

client/player.c:1775:25: warning: Dereference of null pointer
[core.NullDereference]
iov_append(&cfg->caps, preset->data.iov_base, preset->data.iov_len);
                        ^~~~~~~~~~~~~~~~~~~~~

diff --git a/client/player.c b/client/player.c
index 996da26..43934cd 100644 (file)
--- a/client/player.c
+++ b/client/player.c
@@ -1744,6 +1744,9 @@ static DBusMessage *endpoint_select_properties_reply(struct endpoint *ep,
        DBusMessageIter iter;
        struct endpoint_config *cfg;
 
+       if (!preset)
+               return NULL;
+
        reply = dbus_message_new_method_return(msg);
        if (!reply)
                return NULL;