NTFS: Use the new next_dirent utility function just like BFS.

src/add-ons/kernel/file_systems/ntfs/kernel_interface.cpp

@@ -16,6 +16,7 @@
 #include <fs_info.h>
 #include <NodeMonitor.h>
 #include <file_systems/DeviceOpener.h>
+#include <file_systems/fs_ops_support.h>
 #include <util/AutoLock.h>
 
 #include "ntfs.h"
@@ -1233,10 +1234,8 @@ fs_read_dir(fs_volume* _volume, fs_vnode* _node, void* _cookie,
 		dirent->d_dev = _volume->id;
 		dirent->d_ino = cookie->current->inode;
 		strlcpy(dirent->d_name, cookie->current->name, length + 1);
-		dirent->d_reclen = offsetof(struct dirent, d_name) + length + 1;
 
-		bufferSize -= dirent->d_reclen;
-		dirent = (struct dirent*)((uint8*)dirent + dirent->d_reclen);
+		dirent = next_dirent(dirent, length, bufferSize);
 		count++;
 
 		cookie->current = cookie->current->next;