Cleanup IFWL_Adapter interfaces.

xfa/fwl/basewidget/fwl_pushbuttonimp.cpp

Index: xfa/fwl/basewidget/fwl_pushbuttonimp.cpp
diff --git a/xfa/fwl/basewidget/fwl_pushbuttonimp.cpp b/xfa/fwl/basewidget/fwl_pushbuttonimp.cpp
index b1e5f6bdb41a921f822adfa6f1a71440f0bb4fa1..6fab925c91d7e31828195835fa034987f7020aec 100644
--- a/xfa/fwl/basewidget/fwl_pushbuttonimp.cpp
+++ b/xfa/fwl/basewidget/fwl_pushbuttonimp.cpp
@@ -83,13 +83,15 @@ FWL_ERR CFWL_PushButtonImp::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) {
   }
   return FWL_ERR_Succeeded;
 }
-FWL_ERR CFWL_PushButtonImp::SetStates(uint32_t dwStates, FX_BOOL bSet) {
+
+void CFWL_PushButtonImp::SetStates(uint32_t dwStates, FX_BOOL bSet) {
   if ((dwStates & FWL_WGTSTATE_Disabled) && bSet) {
     m_pProperties->m_dwStates = FWL_WGTSTATE_Disabled;
-    return FWL_ERR_Succeeded;
+    return;
   }
-  return CFWL_WidgetImp::SetStates(dwStates, bSet);
+  CFWL_WidgetImp::SetStates(dwStates, bSet);
 }
+
 FWL_ERR CFWL_PushButtonImp::Update() {
   if (IsLocked()) {
     return FWL_ERR_Indefinite;