message: Generalize check on enum alias chaining.
diff: @@ -1884,6 +1884,12 @@ void VulkanHppGenerator::appendEnum( std::string & str, std::pair<std::string, E
  {
  auto aliasIt = enumData.second.aliases.find( alias.second.name );
  assert( aliasIt != enumData.second.aliases.end() );
  + auto nextAliasIt = enumData.second.aliases.find( aliasIt->second.name );
  + while ( nextAliasIt != enumData.second.aliases.end() )
  + {
  + aliasIt = nextAliasIt;
  + nextAliasIt = enumData.second.aliases.find( aliasIt->second.name );
  + }
  enumIt = std::find_if( enumData.second.values.begin(),
  enumData.second.values.end(),
  [&aliasIt]( EnumValueData const & evd ) { return aliasIt->second.name == evd.name; } );
  @@ -10483,7 +10489,7 @@ void VulkanHppGenerator::checkCorrectness()
  { return evd.name == alias.second.name; } ) != e.second.values.end() ) ||
  ( e.second.aliases.find( alias.second.name ) != e.second.aliases.end() ),
  alias.second.xmlLine,
  - "unknown enum alias <" + alias.second.name + ">" );
  + "enum <" + alias.first+ "> uses unknown alias <" + alias.second.name + ">" );
  }
  }
  