Cleanup edges stored in edge_weight_tree on exit

protocol_edge.c: 131 defines local_address using str2sockaddr

str2sockaddr() allocates memory which has to be freed on exit.

src/edge.c

@@ -66,6 +66,12 @@ void free_edge_tree(splay_tree_t *edge_tree) {
 }
 
 void exit_edges(void) {
+	// since edge_weight_tree does not have delete action defined
+	// we have to cleanup it on exit
+	for splay_each(edge_t, e, edge_weight_tree) {
+			sockaddrfree(&e->address);
+			sockaddrfree(&e->local_address);
+		}
 	splay_delete_tree(edge_weight_tree);
 }