Properly fix a bug in threading where a post with multiple child posts will not fork.
Properly fix a bug in threading where a post with multiple child posts will not fork.

allenwq/coursemology.org,dariusf/coursemology.org,allenwq/coursemology.org,Coursemology/coursemology.org,Coursemology/coursemology.org,dariusf/coursemology.org,nnamon/coursemology.org,Coursemology/coursemology.org,allenwq/coursemology.org,dariusf/coursemology.org,allenwq/coursemology.org,allenwq/coursemology.org,nnamon/coursemology.org,nnamon/coursemology.org,nusedutech/coursemology.org,nnamon/coursemology.org,nusedutech/coursemology.org,nusedutech/coursemology.org,nusedutech/coursemology.org,Coursemology/coursemology.org,Coursemology/coursemology.org,dariusf/coursemology.org,nusedutech/coursemology.org,dariusf/coursemology.org,nnamon/coursemology.org