Attmept to remove infinite loop from commit validation hook.

# COMMIT MESSAGE FORMAT ERRORS:
# 1. The subject of the commit message must be 50 characters or under
# 3. There is only a subject and no body.
# Erase all non-comment lines to abort the commit.
Added exit command after failed validation.

This is an attempt to make commit work again.
Fixed bug in commit hook.

The check for lines over 72 characters was being tripped
by the comments added by git commit itself. This made
it impossible to commit anything.