message: Make sure anon var is declared for called field expr
diff: @@ -31,6 +31,7 @@ impl Assemble for ast::ExprCall {
  log::trace!("ExprCall(ExprFieldAccess) => {:?}", c.source.source(span));
  expr.assemble(c, Needs::Value)?.apply(c)?;
  + c.scopes.decl_anon(span)?;
  for (expr, _) in &self.args {
  expr.assemble(c, Needs::Value)?.apply(c)?;
  