fix leaks

dynamodb/filter.odin

@@ -170,6 +170,9 @@ filter_node_destroy :: proc(node: ^Filter_Node) {
 	if node.child != nil {
 		filter_node_destroy(node.child)
 	}
+
+	// Free the node itself (allocated with new(Filter_Node))
+	free(node)
 }
 
 // ============================================================================
@@ -735,10 +738,10 @@ evaluate_contains :: proc(attr: Attribute_Value, val: Attribute_Value) -> bool {
 			}
 		}
 
-	case Number_Set:
-		if v, ok := val.(Number); ok {
-			for n in a {
-				if n == string(v) {
+	case DDB_Number_Set:
+		if v, ok := val.(DDB_Number); ok {
+			for num in a {
+				if compare_ddb_numbers(num, v) == 0 {
 					return true
 				}
 			}