use regfree to release the memory

use regfree() to release the memory requested by the regular expression.#1804

diff --git a/tar/subst.c b/tar/subst.c
index 39c54acfd14f070eb886a01d081550570d7fe066..55ad63dcecdebed66aec3e140d1544adc3be2e51 100644 (file)
--- a/tar/subst.c
+++ b/tar/subst.c
@@ -320,6 +320,7 @@ cleanup_substitution(struct bsdtar *bsdtar)
        while ((rule = subst->first_rule) != NULL) {
                subst->first_rule = rule->next;
                free(rule->result);
+               regfree(&rule->re);
                free(rule);
        }
        free(subst);