Minor 2.2.1 Installer Hiccup

[postiffm]

Upgrading from 2.2 to 2.2.1:
Step 3
We have performed numerous tests of your current web environment. Although no critical issues were found, we recommend that the following items be corrected before continuing.
Status Test
Assets directory exists

I would expect this directory to exist, since I'm upgrading from 2.2. I ignored the warning, and things seem fine.