user32: EnumDisplaySettingsExA: fill in all of lpDevmode->dmDeviceName

[Dmitry Timoshkov]

"Dan Kegel" <dank at kegel.com> wrote:

> 'Cause if we don't, code that expects it to be defined
> is mildly surprised to find that bytes after the string's
> terminating nul are undefined.
> Fixes 16 Valgrind warnings of the form:
> 
> Use of uninitialised value of size 4
>   at mbstowcs_sbcs (mbtowc.c:78)
>   by wine_cp_mbstowcs (mbtowc.c:266)
>   by MultiByteToWideChar (locale.c:1846)
>   by GdiConvertToDevmodeW (driver.c:434)
>   by ChangeDisplaySettingsExA (sysparams.c:3011)
>   by ChangeDisplaySettingsA (sysparams.c:2980)
>   by test_ChangeDisplaySettingsEx (monitor.c:161)
> Uninitialised value was created by a stack allocation
>   at test_ChangeDisplaySettingsEx (monitor.c:141)

GdiConvertToDevmodeW should be fixed instead.

-- 
Dmitry.