tree-wide: fix typos "offest" -> "offset"

This patch was generated by

	git grep -E -i -l 'offest' | xargs -r perl -p -i -e 's/offest/offset/'

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

fs/ext4/inode.c

@@ -4058,7 +4058,7 @@ static Indirect *ext4_find_shared(struct inode *inode, int depth,
 	int k, err;
 
 	*top = 0;
-	/* Make k index the deepest non-null offest + 1 */
+	/* Make k index the deepest non-null offset + 1 */
 	for (k = depth; k > 1 && !offsets[k-1]; k--)
 		;
 	partial = ext4_get_branch(inode, k, offsets, chain, &err);