switch posix_acl_equiv_mode() to umode_t *

... so that &inode->i_mode could be passed to it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c
index 74e469c..a5c29bb 100644
--- a/fs/ext4/acl.c
+++ b/fs/ext4/acl.c
@@ -198,12 +198,10 @@
 	case ACL_TYPE_ACCESS:
 		name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS;
 		if (acl) {
-			mode_t mode = inode->i_mode;
-			error = posix_acl_equiv_mode(acl, &mode);
+			error = posix_acl_equiv_mode(acl, &inode->i_mode);
 			if (error < 0)
 				return error;
 			else {
-				inode->i_mode = mode;
 				inode->i_ctime = ext4_current_time(inode);
 				ext4_mark_inode_dirty(handle, inode);
 				if (error == 0)