Merge to M45: Resolve bad cast to CJS_EventHandler

fpdfsdk/src/javascript/PublicMethods.cpp

 // 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
 
 #include "../../include/javascript/JavaScript.h"
 #include "../../include/javascript/IJavaScript.h"
 #include "../../include/javascript/JS_Define.h"
 #include "../../include/javascript/JS_Object.h"
@@ skipping 2144 matching lines @@
                                 nFieldsCount++;
                         }
                 }
         }
 
         if (wcscmp(sFunction.c_str(), L"AVG") == 0 && nFieldsCount > 0)
                 dValue /= nFieldsCount;
 
         dValue = (double)floor(dValue * FXSYS_pow((double)10,(double)6) + 0.49) / FXSYS_pow((double)10,(double)6);
         CJS_Value jsValue(isolate,dValue);
-        if((CJS_EventHandler*)pContext->GetEventHandler()->m_pValue)
-                ((CJS_EventHandler*)pContext->GetEventHandler())->Value() = jsValue.ToCFXWideString();
+        if(pContext->GetEventHandler()->m_pValue)
+                pContext->GetEventHandler()->Value() = jsValue.ToCFXWideString();
 
         return TRUE;
 }
 
 /* This function validates the current event to ensure that its value is
 ** within the specified range. */
 
 FX_BOOL CJS_PublicMethods::AFRange_Validate(IFXJS_Context* cc, const CJS_Parameters& params, CJS_Value& vRet, CFX_WideString& sError)
 {
         CJS_Context* pContext = (CJS_Context *)cc;
@@ skipping 90 matching lines @@
                 nums.SetElement(nIndex,CJS_Value(isolate,sPart.c_str()));
         }
 
         if (nums.GetLength() > 0)
                 vRet = nums;
         else
                 vRet.SetNull();
 
         return TRUE;
 }