message: Add some detail for a specific suspect case of not supported creation functions.
diff: @@ -6836,7 +6836,7 @@ std::pair<std::string, std::string> VulkanHppGenerator::constructRAIIHandleConst
  [&handle]( ParamData const & pd ) { return pd.type.type == handle.first; } );
  assert( handleParamIt != constructorIt->second.params.end() && handleParamIt->type.isNonConstPointer() );
  - std::string singularConstructor, arrayConstructor;
  + std::string singularConstructor, arrayConstructor, throwDetail;
  bool constructedConstructor = false;
  if ( handleParamIt->len.empty() )
  {
  @@ -6845,12 +6845,18 @@ std::pair<std::string, std::string> VulkanHppGenerator::constructRAIIHandleConst
  singularConstructor = constructRAIIHandleConstructorVoid( handle, constructorIt, enter, leave );
  constructedConstructor = true;
  }
  - else if ( ( constructorIt->second.returnType == "VkResult" ) &&
  - ( constructorIt->second.successCodes.size() == 1 ) && ( !constructorIt->second.errorCodes.empty() ) )
  + else if ( ( constructorIt->second.returnType == "VkResult" ) && ( constructorIt->second.successCodes.size() == 1 ) )
  + {
  + if ( !constructorIt->second.errorCodes.empty() )
  {
  singularConstructor = constructRAIIHandleConstructorResult( handle, constructorIt, enter, leave );
  constructedConstructor = true;
  }
  + else
  + {
  + throwDetail = "\n\tReason: no errorcodes provided.";
  + }
  + }
  }
  else
  {
  @@ -6880,7 +6886,8 @@ std::pair<std::string, std::string> VulkanHppGenerator::constructRAIIHandleConst
  }
  if ( !constructedConstructor )
  {
  - throw std::runtime_error( "Never encountered a constructor function like " + constructorIt->first + " !" );
  + throw std::runtime_error( "Never encountered a constructor function like " + constructorIt->first + " !" +
  + throwDetail );
  }
  return std::make_pair( singularConstructor, arrayConstructor );
  }
  