Fix pre-commit script not preventing commit

[alitzel-macias]

In Exercise 7, in the pre-commit script when the whitespace check script failed but the verify-name-and-email script didn't, then pre-commit exited without error and allowed the commit to go through.

[stelliom]

Nice. thank you! Maybe you could add a comment or note explaining why the status is needed, so the people doing the course don't get confused.

Note

Another option to fix this would be to add set -e at the beginning of the script. This would exit immediately if something fails, i.e. it would not run more pre-commit checks if one has already failed. However, I think in this case your solution is better, since the two pre-commit checks are independent, so if both fail users could fix them in one go.

[mjaehn]

Thanks @alitzel-macias!

This will be fixed in #170 using set -e instead of manual status tracking.

As this covers the same issue you found, so I'll close this PR here.