fixed validation of component field definition

		// find name clashes with module variables

		val container = field.findDesiredParent(typeof(ModuleDefinitionsList)) as ModuleDefinitionsList

		val defs = container.definitions.filter[it.def instanceof ConstDef] // TODO:  || it.def instanceof ModuleParDef

		for (EObject v : defs) {

			val constDefList = ((v as ModuleDefinition).def as ConstDef).defs as ConstList

			for (SingleConstDef d : constDefList.list) {

				if (field.name.equals(d.name)) {

		if (container.checkNameClashModuleDefinitionsList(field, field.name)) {

			error('Name clash with another variable definition in this scope!',

				TTCN3Package.eINSTANCE.structFieldDef_Name);

			return;

		}

			}

		}

		// find name clashes with variables in parent body

		val body = field.findDesiredParent(typeof(StructDefBody)) as StructDefBody