This fixes the wine_dbgstr_variant() compatibility with non __STDC__
compilers and source code that defines _FORCENAMELESSUNION.
Signed-off-by: Francois Gouget <fgouget@free.fr>
Signed-off-by: Dmitry Timoshkov <dmitry@baikal.ru>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>