[PATCH] libext2fs: add missing check for utf8lookup()'s return value

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

Fixes-Coverity-Bug: 1442630
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Cc: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxx>
---
 lib/ext2fs/nls_utf8.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/ext2fs/nls_utf8.c b/lib/ext2fs/nls_utf8.c
index 42148099a..e4c4e7a30 100644
--- a/lib/ext2fs/nls_utf8.c
+++ b/lib/ext2fs/nls_utf8.c
@@ -789,6 +789,8 @@ static int utf8byte(struct utf8cursor *u8c)
 			}
 
 			leaf = utf8lookup(u8c->data, u8c->hangul, u8c->s);
+			if (!leaf)
+				return -1;
 			ccc = LEAF_CCC(leaf);
 		}
 
-- 
2.19.1