Resolve bad cast to CJS_EventHandler
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
R=tsepez@chromium.org

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

andoma/pdfium,azunite/libpdfium,andoma/pdfium,azunite/libpdfium,DrAlexx/pdfium,DrAlexx/pdfium,DrAlexx/pdfium,andoma/pdfium,andoma/pdfium,DrAlexx/pdfium,azunite/libpdfium,azunite/libpdfium