Define property which is later accessed in lock transaction

src/Composer/DependencyResolver/LockTransaction.php

@@ -40,11 +40,14 @@ class LockTransaction
      * @var array
      */
     protected $unlockableMap;
-
     protected $decisions;
-
     protected $resultPackages;
 
+    /**
+     * @var array
+     */
+    protected $operations;
+
     public function __construct($policy, $pool, $presentMap, $unlockableMap, $decisions)
     {
         $this->policy = $policy;