BUGFIX: Avoid error in Debugger::findProxyAndShortFilePath()
BUGFIX: Avoid error in Debugger::findProxyAndShortFilePath()

If `$file` points to eval'd code, the `@file(…)` code does not return
an array, leading to `count()` being called on an incompatible value.
neos/flow,neos/flow,neos/flow,neos/flow