Use of uninitialized value in numeric eq (==) at Utils.pm

[mattclements]

Getting an error when calling download-inventory

./mtglacier download-inventory --config glacier.cfg --vault backup_server --new-journal backup_server.log
MT-AWS-Glacier, Copyright 2012-2014 Victor Efimov http://mt-aws.com/ Version 1.120

PID 28653 Started worker
PID 28653 Fetched job list for inventory retrieval
Use of uninitialized value in numeric eq (==) at /Users/matt/Projects/mt-aws-glacier/lib/App/MtAws/Utils.pm line 291.
Use of uninitialized value in numeric eq (==) at /Users/matt/Projects/mt-aws-glacier/lib/App/MtAws/Utils.pm line 264.

EXIT on SIGCHLD (exit_code 1)