Do not check pointers before deleting them.

xfa/fwl/basewidget/fxmath_barcodeimp.cpp

Index: xfa/fwl/basewidget/fxmath_barcodeimp.cpp
diff --git a/xfa/fwl/basewidget/fxmath_barcodeimp.cpp b/xfa/fwl/basewidget/fxmath_barcodeimp.cpp
index 5ca09276710363845eb0476f03a40ed45de769b9..5efd1621c82b19ec2ab23ed998e76dcd3780d265 100644
--- a/xfa/fwl/basewidget/fxmath_barcodeimp.cpp
+++ b/xfa/fwl/basewidget/fxmath_barcodeimp.cpp
@@ -46,13 +46,13 @@ static CBC_CodeBase* FX_Barcode_CreateBarCodeEngineObject(BC_TYPE type) {
       return NULL;
   }
 }
+
 CFX_Barcode::CFX_Barcode() {}
+
 CFX_Barcode::~CFX_Barcode() {
-  if (m_pBCEngine) {
-    delete m_pBCEngine;
-    m_pBCEngine = NULL;
-  }
+  delete m_pBCEngine;
 }
+
 FX_BOOL CFX_Barcode::Create(BC_TYPE type) {
   m_pBCEngine = FX_Barcode_CreateBarCodeEngineObject(type);
   return m_pBCEngine != NULL;