Merge to M45: Resolve bad cast to CJS_EventHandler

At line 2026 in pdfsdk/src/javascript/PublicMethods.cpp,
the writer wants to perform type cast like line 2027 but
he made a mistake to make type conversion on m_pValue.
Even at line 2027, it's redundant to make type conversion.
The returned type of pContext->GetEventHandler() is
CJS_EventHandler*.

BUG=529310
TBR=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1325753007 .

(cherry picked from commit 4ea0e6b972b0c6f6c9ad3f45a66a733d8dc3ca96)

Review URL: https://codereview.chromium.org/1352123002 .
diff --git a/fpdfsdk/src/javascript/PublicMethods.cpp b/fpdfsdk/src/javascript/PublicMethods.cpp
index a615d44..858386a 100644
--- a/fpdfsdk/src/javascript/PublicMethods.cpp
+++ b/fpdfsdk/src/javascript/PublicMethods.cpp
@@ -2162,8 +2162,8 @@
 
 	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;
 }