Fixes compiler error:
win32_io.c:2037:5: error: conflicting types for 'ntfs_device_win32_ftruncate'; have 'int(struct ntfs_device *, s64)' {aka 'int(struct ntfs_device *, long int)'}
2037 | int ntfs_device_win32_ftruncate(struct ntfs_device *dev, s64 size)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../include/ntfs-3g/device.h:30,
from win32_io.c:77:
../include/ntfs-3g/device_io.h:75:5: note: previous declaration of 'ntfs_device_win32_ftruncate' with type 'int(struct ntfs_device *, s64)' {aka 'int(struct ntfs_device *, long int)'}
75 | int ntfs_device_win32_ftruncate(struct ntfs_device*, s64);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
64f3464378