Silencing RtlNtStatusToDosErrorNoTeb() a bit

[Dmitry Timoshkov]

"Wolfram Sang" <wolfram at the-dreams.de> wrote:

> Another solution might be to define, let's say, ERROR_WINE_FIXME for all
> real fixmes and convert them to ERROR_MR_MID_NOT_FOUND.

If a FIXME is not appropriate it should be replaced by a WARN.
Although most of the places it's used are the places with missing
functionality.

A real solution for the problem above is to write a test case
and add a mapping for missing status code(s).

-- 
Dmitry.