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

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: Gabriel Krisman Bertazi <krisman@collabora.com>

diff --git a/fs/unicode/utf8-norm.c b/fs/unicode/utf8-norm.c
index 20d440c..801ed6d 100644 (file)
--- 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);
                }