Commit message whitespace issue

[Thomas Stüfe]

Hi,

sorry to be a bother, but I try to understand the jcheck bot error on the
following PR:

https://github.com/openjdk/jdk/pull/332

"The commit message contains a tab on line 2"

The PR contains a single commit which I created using

git commit -m 'JDK-8253572'

Since the commit message only consists of one word, where does the tab come
into play? What should I do to fix or avoid this problem?

Thanks again!

..Thomas