Fix auto-consolidate if/else logic

Dear lamw,

We are using ghettoVCB to backup our VMs. We really like the addition of the new "auto-consolidate snapshot" function, but found a glitch in its implementation.

Hopefully you agree, and merge this pull request to fix the issue.

The logic to auto-consolidate snapshots did not trigger consolidation - it merely logged that it should. This commit fixes the if/else logic around that decision.

Mark.