prune: fix memory leak of list memory

This code was losing the backing memory of the list data itself.

diff --git a/contrib/prune/prune.c b/contrib/prune/prune.c
index 04f18d9b6706c5654d2dd6196b4f95ec1a6404ad..32b312ee6a28731fa2be6bd41674b1420ceef331 100644 (file)
--- a/contrib/prune/prune.c
+++ b/contrib/prune/prune.c
@@ -183,8 +183,8 @@ int main(int argc, char **argv)
        agwrite(graph, stdout);
        agclose(graph);
     }
-    free(attr_list);
-    free(node_list);
+    free_generic_list(attr_list);
+    free_generic_list(node_list);
     graphviz_exit(EXIT_SUCCESS);
 }