locks: print unsigned ino in /proc/locks

An ino is unsigned, so display it as such in /proc/locks.

Cc: [e-mail]
Signed-off-by: Amir Goldstein <[e-mail]>
Signed-off-by: Jeff Layton <[e-mail]>

fs/locks.c

···
 	}
 	if (inode) {
 		/* userspace relies on this representation of dev_t */
-		seq_printf(f, "%d %02x:%02x:%ld ", fl_pid,
+		seq_printf(f, "%d %02x:%02x:%lu ", fl_pid,
 				MAJOR(inode->i_sb->s_dev),
 				MINOR(inode->i_sb->s_dev), inode->i_ino);
 	} else {