owncloud/core — pull request #12290 by PVince81 (2014-11-19 09:54:08+00:00)
Title: Show warning when invalid user was passed

Sometimes there are bugs that cause setupFS() to be called for
non-existing users. Instead of failing hard and breaking the instance,
this fix simply logs a warning.

Supersedes #12175 due to Jenkins' inability to properly check out code from branches where code was force pushed