Add return statement to fix unit tests

[cpyle0819]

aws-doc-sdk-examples Pull Request

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Existing Example Update

The submitter has:

• [x] Confirmed that the correct copyright is included in all files.
• [ ] Major code changes have been reviewed, and the submitter has incorporated review comments.
• [ ] Changed or added comments and strings have been reviewed, and the submitter has incorporated any and all suggested edits.

Resolve Issue

Issue #

Description of Changes

Some missing return statements were causing some unit tests to fail. This adds the missing statements.

• [x] I have tested my changes and created unit tests for new code paths.
• [ ] Changes have been reviewed, and all reviewer comments have been incorporated.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.