fix more tingz

dynamodb/filter.odin

@@ -827,7 +827,7 @@ parse_filter_expression_string :: proc(request_body: []byte) -> (expr: string, o
 // ============================================================================
 
 make_filter_node :: proc() -> ^Filter_Node {
-	node := make_filter_node()
+	node := new(Filter_Node)
 	node.allocator = context.allocator
 	return node
 }

dynamodb/storage.odin

@@ -193,10 +193,14 @@ remove_table_lock :: proc(engine: ^Storage_Engine, table_name: string) {
 	sync.mutex_lock(&engine.table_locks_mutex)
 	defer sync.mutex_unlock(&engine.table_locks_mutex)
 
-	if lock, found := engine.table_locks[table_name]; found {
-		delete(table_name, engine.allocator)
+	// Find the actual heap-allocated key string from the map
+	for key, lock in engine.table_locks {
+		if key == table_name {
+			delete_key(&engine.table_locks, key)
+			delete(key, engine.allocator) // free the map's owned key!
 			free(lock, engine.allocator)
-		delete_key(&engine.table_locks, table_name)
+			break
+		}
 	}
 }