select component does not work correctly, if option text contains amp chars

Hi,

I just stepped over a bug in the select component.

If the option text of a select component contains special chars (in this case an &), the value is not submitted and not mailed correctly.

The reason therefore is different creation methods for the select options while rendering and submitting the form.

function _webform_render_select() fetches the values from the modules configuration and creates the form component names with _webform_safe_name().

function _webform_submit_select() pipes the submitted values through _webform_filtervalues(), which has an impact und html special chars.

To recreate this error, create a webform with a select component.
Use something like

red & green
blue & yellow
black & white

as options text.

Fill and submit the form, the select values won't be submitted.

The form elements option name will be something like red__green.
When the form is submitted, the module looks for the field key red_amp_green.

Simple workaround is to modify _webform_render_select() at about line 96 to:

...
    }
    else {
      $options[_webform_safe_name(_webform_filtervalues($row))] = $row;
    }