DPRINT fix: should use 'LastKnownGood' instead of 'Default'

reactos/trunk/reactos/boot/freeldr/freeldr/windows/registry.c

(a path since 66145 - as I can see)
Fix

"RegQueryValue('Default') failed (Error %u)\n"
as
"RegQueryValue('LastKnownGood') failed (Error %u)\n"

or even something more elegant.

I had an
...\ReactOS-0.3.14\boot\freeldr\freeldr\reactos\registry.c

DataSize = sizeof(ULONG);
Error = RegQueryValue(SelectKey,
L"LastKnownGood",
NULL,
(PUCHAR)&LastKnownGoodSet,
&DataSize);
if (Error != ERROR_SUCCESS)
{
ERR("RegQueryValue('Default') failed (Error %u)\n", (int)Error);