Bugfix: fundraiser_mail_alter() is incorrectly triggered from order update screens. Since this function pulls node id from $_GET and nid is not present in the URL for these screens this results in blank From and Subject attributes. Bailing out if $node is not an object should sidestep the issue.
Merge pull request #282 from JacksonRiver/aclu-6.x-680-ca_update_mail_compatibility_bug

Bugfix: fundraiser_mail_alter() is incorrectly triggered from order upda...