[PATCH] fs: squasfs: fix a possible NULL pointer dereference in sqfs_opendir()

[Richard Genoud]

token_count may be != 0 and token_list not yet allocated when the out
code is reached

Reported-by: Coverity CID 313547
Fixes: ea1b1651c6a8 ("fs/squashfs: sqfs_opendir: simplify error handling")
Signed-off-by: Richard Genoud <richard.gen...@posteo.net>
---
 fs/squashfs/sqfs.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/squashfs/sqfs.c b/fs/squashfs/sqfs.c
index 608a2bb454c..c47046b76e5 100644
--- a/fs/squashfs/sqfs.c
+++ b/fs/squashfs/sqfs.c
@@ -949,8 +949,9 @@ int sqfs_opendir(const char *filename, struct fs_dir_stream 
**dirsp)
        *dirsp = (struct fs_dir_stream *)dirs;
 
 out:
-       for (j = 0; j < token_count; j++)
-               free(token_list[j]);
+       if (token_list)
+               for (j = 0; j < token_count; j++)
+                       free(token_list[j]);
        free(token_list);
        free(pos_list);
        free(path);