stephane/libmodbus — pull request #164 by karlp (2013-11-14 17:03:43+00:00)
Title: [docs] drop reference to non-existent return data

The report slave id function returns the number of bytes as the _return_
value, and does not include it as the first byte in the dest buffer.

Update documentation to reflect reality. There's no missing
functionality, just slightly confusing documentation.