review code pattern consistency

app/ics/api/engine/approve_stock.php

@@ -24,7 +24,8 @@ $type         = $data['type'] ?? '';
 
 if (!$id || !$warehouse_id || !in_array($type, ['in', 'out', 'transfer'])) {
     http_response_code(400);
-    exit(json_encode(['success' => 0, 'message' => 'Invalid parameters.']));
+    $answer['message'] = 'Invalid parameters.';
+    exit(json_encode($answer));
 }
 
 $stock  = new StockManager($pdo2, $company_id);
@@ -44,5 +45,6 @@ try {
 } catch (Exception $e) {
     $pdo2->rollBack();
     http_response_code(400);
-    exit(json_encode(['success' => 0, 'message' => $e->getMessage()]));
+    $answer['message'] = $e->getMessage();
+    exit(json_encode($answer));
 }