ntfs: Fix several warnings

src/add-ons/kernel/file_systems/ntfs/libntfs/dir.h

@@ -88,6 +88,8 @@ extern int ntfs_delete(ntfs_volume *vol, const char *path,
 extern int ntfs_link(ntfs_inode *ni, ntfs_inode *dir_ni, const ntfschar *name,
 		u8 name_len);
 
+extern MFT_REF ntfs_mft_get_parent_ref(ntfs_inode *ni);
+
 /*
  * File types (adapted from include <linux/fs.h>)
  */

src/add-ons/kernel/file_systems/ntfs/libntfs/logging.c

@@ -276,7 +276,6 @@ static const char * ntfs_log_get_prefix(u32 level)
 
 	return prefix;
 }
-#endif //__HAIKU___
 
 /**
  * ntfs_log_set_handler - Provide an alternate logging handler
@@ -296,6 +295,7 @@ void ntfs_log_set_handler(ntfs_log_handler *handler)
 	} else
 		ntfs_log.handler = ntfs_log_handler_null;
 }
+#endif //__HAIKU___
 
 /**
  * ntfs_log_redirect - Pass on the request to the real handler

src/add-ons/kernel/file_systems/ntfs/libntfs/security.c

@@ -1112,7 +1112,7 @@ static int upgrade_secur_desc(ntfs_volume *vol,
  *	Should not be called for user root, however the group may be root
  *
  */
-
+#ifndef __HAIKU__
 static BOOL staticgroupmember(struct SECURITY_CONTEXT *scx, uid_t uid, gid_t gid)
 {
 	BOOL ingroup;
@@ -1134,6 +1134,7 @@ static BOOL staticgroupmember(struct SECURITY_CONTEXT *scx, uid_t uid, gid_t gid
 	}
 	return (ingroup);
 }
+#endif //__HAIKU__
 
 #if defined(__sun) && defined (__SVR4)