workaround for IE specific reply/comment layout bug in P2 theme

I don’t fully understand, but in IE 7 and IE 8 (at least) P2’s inline reply form had a huge amount of vertical space between the textarea and the submit button below it. The problem is worst for replies at the top of a page– lower down the page they appear more and more normal.

It’s confusing to the user to have to scroll down a whole page to get to the submit button.

I worked around it by explicitly adding style="clear:none" to the submit input in p2/comment-form.php on line 53:

<input id="comment-submit" name="submit" type="submit" value="<?php esc_attr_e( 'Reply', 'p2' ); ?>" style="clear:none" />