Fix #83, Adds null termination to software bus messaging

[chillfig]

Checklist (Please check before submitting)

• I reviewed the Contributing Guide.
• I signed and emailed the appropriate Contributor License Agreement to GSFC-SoftwareRelease@mail.nasa.gov and copied cfs-program@lists.nasa.gov.

Describe the contribution
-Fixes #83

Testing performed
make build & lcov on local dev machine

Expected behavior changes
No expected behavior changes

System(s) tested on
Ubuntu 20.04

Additional context
N/A

Third party code
N/A

Contributor Info - All information REQUIRED for consideration of pull request
Justin Figueroa, Vantage Systems

[chillfig]

Failing check is due to unexpected force command used in the static analysis workflow yml file.