fixup! Support member access

Author: matheusaaguiar

libsolidity/analysis/ReferencesResolver.cpp

@@ -509,11 +509,9 @@ void ReferencesResolver::validateYulIdentifierName(yul::YulName _name, SourceLoc
 
 void ReferencesResolver::endVisit(MemberAccess const& _memberAccess)
 {
+	// This is only for specific cases to support ConstantEvaluator.
 	std::vector<Declaration const*> candidates;
-	auto const* identifier = dynamic_cast<Identifier const*>(&_memberAccess.expression());
-	auto const* nestedMemberAccess = dynamic_cast<MemberAccess const*>(&_memberAccess.expression());
-
-	if (identifier)
+	if (auto const* identifier = dynamic_cast<Identifier const*>(&_memberAccess.expression()))
 	{
 		if (auto const* contract = dynamic_cast<ContractDefinition const*>(identifier->annotation().referencedDeclaration))
 			candidates += contract->stateVariables();
@@ -525,7 +523,7 @@ void ReferencesResolver::endVisit(MemberAccess const& _memberAccess)
 			candidates += ASTNode::filteredNodes<ContractDefinition>(sourceUnit->nodes());
 		}
 	}
-	else if (nestedMemberAccess)
+	else if (auto const* nestedMemberAccess = dynamic_cast<MemberAccess const*>(&_memberAccess.expression()))
 	{
 		auto const* contract = dynamic_cast<ContractDefinition const*>(nestedMemberAccess->annotation().referencedDeclaration);
 		if (!contract)