Fixes vocoder step bug in demo

[wiitt]

PR Goal?

This PR provides a dummy value for vocoder_global_step which is not used in demo but is required for synthesize_helper and PredictionWritingWavCallback.

Fixes?

Fixes 453.

Feedback sought?

Check if this value is local to this file and does not affecting others.

Priority?

The bug blocks further work on the issue 448.

Tests added?

No additional testing was added.

How to test?

Run everyvoice demo.

Confidence?

Changes ready to merge.

Version change?

Bug fix.

Related PRs?

There are no other related PR.

[codecov]

The author of this PR, wiitt, is not an activated member of this organization on Codecov.
Please activate this user on Codecov to display this PR comment.
Coverage data is still being uploaded to Codecov.io for purposes of overall coverage calculations.
Please don't hesitate to email us at [email protected] with any questions.

[github-actions]

CLI load time: 0:00.23
Pull Request HEAD: 9af5f8d4d422ff53e68b39848c45848606ab9cbb
Imports that take more than 0.1 s:
import time: self [us] | cumulative | imported package

[roedoejet]

Thanks for this fix @wiitt ! Nice job on figuring out how the code works and fixing a real bug in the code 👏 👏

I noticed that it looks like you don't have our commit hooks installed, which will auto-format the code and validate your commit messages. Have a look at the contributing documentation for a guide on how to get set up. Once you've read it through let me know if it makes sense. I'll be happy to merge this. Thanks again @wiitt !

[roedoejet]

nice find, thanks for the comment explaining it as well!

[roedoejet]

thank you @wiitt