MT Importer assigns e-mail addresses to pingbacks and trackbacks

[markjaquith]

They appear to either be the e-mail addresses from other comments. Maybe they're leaking through because a variable isn't being unset properly.

[rob1n]

Lines 366 through 369 of wp-admin/import/mt.php:

if ( 'comment' == $context )
	$comment->comment_author_email = $email;
else
	$ping->comment_author_email = $email;

We can probably yank that second else statement and be done with it.

[rob1n]

I've never run MT before... does that do it?

[markjaquith]

(In [6101]) Don't set comment_author_email for pings in MT import. fixes #4461