[lwip-devel] [patch #9211] mqtt: Check Will Flag rather than will_topic_len for appending will topic and message

[Axel Lin]

Follow-up Comment #4, patch #9211 (project lwip):

The patch is not to change the coding style.
There is a small difference when will topic is zero-length rather than NULL.
If will topic is zero-length, the Will flag bit is set.
But current code won't send will topic/message in the payload.
i.e. the payload length field does not match the exactly payload sent.


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