MR28v1 - winex11: PE conversion preparation

[Huw Davies (@huw)]

Huw Davies (@huw) commented about dlls/winex11.drv/keyboard.c:
>  	if(ret)
>  	{
>  	    TRACE_(key)("Translating char 0x%02x to unicode\n", *(BYTE *)lpChar);
> -	    ret = MultiByteToWideChar(CP_UNIXCP, 0, lpChar, ret, bufW, bufW_size);
> +            ret = ntdll_umbstowcs(  lpChar, ret, bufW, bufW_size );
It hardly seems worth mentioning, but I will: there's a double space before `lpChar`.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/28#note_559