Do not return EFAULT for ERROR_INVALID_NAME.

A file name that contains a colon will be rejected by GeFileInformation()
with ERROR_INVALID_NAME. This must be treated as ENOENT. Such a file name
ends up in do_lstat() when the rev:path notation is used (eg. in
'git show').

compat/mingw.c

@@ -76,9 +76,6 @@ static int do_lstat(const char *file_name, struct stat *buf)
 	case ERROR_NOT_ENOUGH_MEMORY:
 		errno = ENOMEM;
 		break;
-	case ERROR_INVALID_NAME:
-		errno = EFAULT;
-		break;
 	default:
 		errno = ENOENT;
 		break;