invalid argument in foreach in webform_format_email_address

There's a line of code in webform_format_email_address that causes submissions to display a warning message when a form is submitted and the form is set up to email a component value.

Line 4317 of webform.module

        foreach ($name as &$one_name) {
          $name = isset($options[$one_name]) ? $options[$one_name] : $name;
        }

Since name begins the foreach as an array, but is converted to a string, the foreach barks the warning. This might be related to specific version of PHP, I'm using 5.5.27.