Socket not cleaned up after failed transfer

I ran two alter table statements to switch Aria tables to Innodb. The first statement ran prefectly. The second statement I received this error. I had to manually go into the directory and remove the sock file. Can this be automated on a fail in the future?

'''2018-07-20 20:46:58 FATAL listen unix /tmp/gh-ost.hrst_stg.source_xref_stg.sock: bind: address already in use'''