message: fix non-release build
diff: @@ -2946,7 +2946,11 @@ bool VulkanHppGenerator::appendFunctionHeaderArgumentStandard( std::string &
  void VulkanHppGenerator::appendFunctionHeaderReturnType( std::string & str,
  CommandData const & commandData,
  - size_t /*returnParamIndex*/,
  + size_t
  +#if !defined( NDEBUG )
  + returnParamIndex
  +#endif
  + ,
  std::string const & enhancedReturnType,
  bool enhanced,
  bool twoStep,
  