Merge to M46: 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 2005 matching lines @@
       }
     }
   }
 
   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,
@@ skipping 80 matching lines @@
     nums.SetElement(nIndex, CJS_Value(isolate, sPart.c_str()));
   }
 
   if (nums.GetLength() > 0)
     vRet = nums;
   else
     vRet.SetNull();
 
   return TRUE;
 }