More unique_ptrs in CXFA_FMParse::ParseForeachExpression and avoid leaks

xfa/fxfa/fm2js/xfa_expression.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef XFA_FXFA_FM2JS_XFA_EXPRESSION_H_
 #define XFA_FXFA_FM2JS_XFA_EXPRESSION_H_
 
 #include <memory>
+#include <vector>
 
 #include "xfa/fxfa/fm2js/xfa_simpleexpression.h"
 
 enum XFA_FM_EXPTYPE {
   XFA_FM_EXPTYPE_UNKNOWN,
   XFA_FM_EXPTYPE_FUNC,
   XFA_FM_EXPTYPE_VAR,
   XFA_FM_EXPTYPE_EXP,
   XFA_FM_EXPTYPE_BLOCK,
   XFA_FM_EXPTYPE_IF,
@@ skipping 169 matching lines @@
   std::unique_ptr<CXFA_FMSimpleExpression> m_pStep;
   std::unique_ptr<CXFA_FMExpression> m_pList;
 };
 
 class CXFA_FMForeachExpression : public CXFA_FMLoopExpression {
  public:
   // Takes ownership of |pAccessors|.
   CXFA_FMForeachExpression(
       uint32_t line,
       const CFX_WideStringC& wsIdentifier,
-      CFX_ArrayTemplate<CXFA_FMSimpleExpression*>* pAccessors,
+      std::vector<std::unique_ptr<CXFA_FMSimpleExpression>>&& pAccessors,
       CXFA_FMExpression* pList);
   ~CXFA_FMForeachExpression() override;
 
   void ToJavaScript(CFX_WideTextBuf& javascript) override;
   void ToImpliedReturnJS(CFX_WideTextBuf&) override;
 
  private:
   CFX_WideStringC m_wsIdentifier;
-  CFX_ArrayTemplate<CXFA_FMSimpleExpression*>* m_pAccessors;
+  std::vector<std::unique_ptr<CXFA_FMSimpleExpression>> m_pAccessors;
   std::unique_ptr<CXFA_FMExpression> m_pList;
 };
 
 #endif  // XFA_FXFA_FM2JS_XFA_EXPRESSION_H_