Fixes to osDelayUntil

[CppBaddy]

This fix addresses two use cases:

1. FreeRTOS debug build assert when pass zero as a second parameter to vTaskDelayUntil.
2. Very very long delay if we pass in target tick which already has expired (in a past)

[VladimirUmek]

Hi, many thanks for providing this fix!

I fully agree with it, but there are syntax errors and we must return an error in case if provided delay cannot be execute.
It would be great if you could add something like:

    if (delay && 0 == (delay >> (8 * sizeof(TickType_t) - 1))) {
      vTaskDelayUntil (&tcnt, delay);
    }
    else {
      /* No delay or already expired */
      stat = osErrorParameter;
    }

[CppBaddy]

Hi Vladimir,
Added your proposed changes and fixed missing bracket too.
Cheers,
Yulay

[VladimirUmek]

Great, thanks!