IFRAME invalid url

Iframe module generates URL with invalid query string.

I am using following type of URL for the iframe
http://mydomain/content/phplist/?p=preferences&uid=b003b98749ba21ed87e32cf262ed03b4
The iframe module will encoded it, & becomes &, resulting in url:
http://mydomain/content/phplist/?p=preferences&uid=b003b98749ba21ed87e32cf262ed03b4

This is invalid. The PHP $_GET variable in the script opened in the iframe will not recognise "uid" as an attribute, instead it asumes "amp;uid" as being te attribute. There must not be any htmlentities (&) in the src url for an iframe.

My solution:
In iframe.module, at line 801, remove the check_url function.
So:

'<iframe src="' . check_url(url($path, $options)) . '"' . drupal_attributes($options['attributes']) .

Becomes:

'<iframe src="' . url($path, $options) . '"' . drupal_attributes($options['attributes']) .

The same goes for the link created in case a browser does not support iframes. Here html entities are alowed, but the l() function already uses check_url(), so when using check_url() again as parameter for the l() function creates a double-encoding which is not valid. Also here remove check_url().
My solution:
In iframe.module, at line 804, remove the check_url function.
So:

    t('Your browser does not support iframes. But You can use the following link.') . ' ' . l('Link', check_url(url($path, $options)), $optionsLink) . '</iframe>';

Becomes

    t('Your browser does not support iframes. But You can use the following link.') . ' ' . l('Link', url($path, $options), $optionsLink) . '</iframe>';