[BUG] The `OSpackages.sh` Script's Help-Function Does Not Work If Executed On Unrecognized Platform

[ferricoxide]

Describe the bug

The OSpackages.sh script's help-function does not work if executed on unrecognized platform

Severity

Completely Broken (No work-around evident)

To Reproduce
Steps to reproduce the behavior:

1. Install project contents onto a system not supported by the OSpackages.sh script's GetDefaultRepos function
2. Invoke script with -h or --help flags
3. Script begins to execute, but aborts after printing the -a List of repository-names to activate line

Expected behavior

The OSpackages.sh script's help-function should work anywhere that a BASH or similar interactive shell works

Deviance Description

The OSpackages.sh script's help-function only works on hosts where the GetDefaultRepos function succeeds