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[iso] fix possible crash when accessing root UDF files

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* See http://lists.gnu.org/archive/html/libcdio-devel/2012-11/msg00013.html
  and http://cgit.freedesktop.org/~teuf/cdio/commit/?id=6c0251d145e44b7cdfeb9767c615646fb8f51320
This commit is contained in:
Christophe Fergeau 2012-11-22 13:18:30 +00:00 • committed by Pete Batard
parent c8276a5fe8
commit 249d3e16fb
2 changed files with 8 additions and 7 deletions
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3
src/libcdio/udf/udf_fs.c
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@ -257,7 +257,8 @@ udf_fopen(udf_dirent_t *p_udf_root, const char *psz_name)
p_udf_root->psz_name, p_udf_root->b_dir,
p_udf_root->b_parent);
p_udf_file = udf_ff_traverse(p_udf_dirent, psz_token);
udf_dirent_free(p_udf_dirent);
if (p_udf_file != p_udf_dirent)
udf_dirent_free(p_udf_dirent);
}
else if ( 0 == strncmp("/", psz_name, sizeof("/")) ) {
return udf_new_dirent(&p_udf_root->fe, p_udf_root->p_udf,