[PATCH] unicode: add missing check for an error return from utf8lookup()

["Theodore Ts'o" <tytso@xxxxxxx>]

Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Cc: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxx>
---
 fs/unicode/utf8-norm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/unicode/utf8-norm.c b/fs/unicode/utf8-norm.c
index 20d440c3f2db..801ed6d2ea37 100644
--- a/fs/unicode/utf8-norm.c
+++ b/fs/unicode/utf8-norm.c
@@ -714,6 +714,8 @@ int utf8byte(struct utf8cursor *u8c)
 			}
 
 			leaf = utf8lookup(u8c->data, u8c->hangul, u8c->s);
+			if (!leaf)
+				return -1;
 			ccc = LEAF_CCC(leaf);
 		}
 
-- 
2.19.1