fix windows compile errors in OpenGLContext
fix windows compile errors in OpenGLContext

Change-Id: Ic1a072d340d9115a6fc110bc9f71532739985d48

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core