Replace more static casts in FWL (part 3)

xfa/src/fwl/src/lightwidget/checkbox.cpp

Index: xfa/src/fwl/src/lightwidget/checkbox.cpp
diff --git a/xfa/src/fwl/src/lightwidget/checkbox.cpp b/xfa/src/fwl/src/lightwidget/checkbox.cpp
index a9ae80f5333b1a1e0d2e99deb4ed9d9ee3f6216e..37aeb087f1543852c45b7b1c928cc9060cfbe0cd 100644
--- a/xfa/src/fwl/src/lightwidget/checkbox.cpp
+++ b/xfa/src/fwl/src/lightwidget/checkbox.cpp
@@ -37,10 +37,10 @@ FWL_ERR CFWL_CheckBox::SetBoxSize(FX_FLOAT fHeight) {
   return FWL_ERR_Succeeded;
 }
 int32_t CFWL_CheckBox::GetCheckState() {
-  return ((IFWL_CheckBox*)m_pIface)->GetCheckState();
+  return static_cast<IFWL_CheckBox*>(m_pIface)->GetCheckState();
 }
 FWL_ERR CFWL_CheckBox::SetCheckState(int32_t iCheck) {
-  return ((IFWL_CheckBox*)m_pIface)->SetCheckState(iCheck);
+  return static_cast<IFWL_CheckBox*>(m_pIface)->SetCheckState(iCheck);
 }
 CFWL_CheckBox::CFWL_CheckBox() {}
 CFWL_CheckBox::~CFWL_CheckBox() {}