PVS-Studio warning V523 for UnrealEngine4

class SLATE_API FSlateStyleSet : public ISlateStyle
{
  ....
  template< typename DefinitionType >
  FORCENOINLINE void Set(....)
  {
    ....
    if ( DefinitionPtr == NULL )
    {
      WidgetStyleValues.Add( PropertyName,
        MakeShareable(new DefinitionType(InStyleDefintion)) );
    }
    else
    {
      WidgetStyleValues.Add( PropertyName,
        MakeShareable(new DefinitionType(InStyleDefintion)) );
    }
  }
  ....
};

This suspicious code was found in UnrealEngine4 project by PVS-Studio static code analyzer.
Warning message is:
V523 The 'then' statement is equivalent to the 'else' statement. slatestyle.h 289

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/