ntfs_attr_close(): Ignore NULL 'ntfs_attr'.

 - Fixes ntfs_readdir() of non-root directory SIGSEGV.

diff --git a/libntfs/attrib.c b/libntfs/attrib.c
index b04bb38..d8cc670 100644 (file)
--- a/libntfs/attrib.c
+++ b/libntfs/attrib.c
@@ -382,6 +382,8 @@ err_out:
  */
 void ntfs_attr_close(ntfs_attr *na)
 {
+       if (!na)
+               return;
        if (NAttrNonResident(na) && na->rl)
                free(na->rl);
        /* Don't release if using an internal constant. */