make sure all nodes are correctly freed in create_property_node()

We make sure that the newly created tree and all remaining nodes passed in
in the node_array are freed.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66042 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

regparse.c

@@ -5770,6 +5770,10 @@ create_sequence_node(Node **np, Node **node_array)
   while (--i >= 0) {
     *np = node_new_list(node_array[i], tmp);
     if (IS_NULL(*np)) {
+      while (i >= 0) {
+        onig_node_free(node_array[i]);
+        node_array[i--] = NULL_NODE;
+      }
       onig_node_free(tmp);
       return ONIGERR_MEMORY;
     }