Just in case post_status isn't set for some reason.

git-svn-id: http://svn.automattic.com/wordpress/trunk@757 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/import-mt.php

@@ -125,6 +125,7 @@ foreach ($posts as $post) { if ('' != trim($post)) {
             case 'STATUS':
                 // "publish" and "draft" enumeration items match up; no change required
                 $post_status = $value;
+				if (empty($post_status)) $post_status = 'publish';
                 break;
             case 'ALLOW COMMENTS':
                 $post_allow_comments = $value;