[lwip-devel] [task #10369] Various changes

[Iordan Neshev]

Follow-up Comment #3, task #10369 (project lwip):

>change pbuf->ref from u16_t to s16_t to check for underflows?
We'd better not. After all, the nature of ref is unsigned.

>Add a SIO_FD_X printf-formatter define
Yet another formatter? Casting to u32_t would do the job
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> 2. ppp_oe.c 
oh, you're right. I didn't look at it from this point of view. Sorry if we
have already talked about this, I don't remember.


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