#013773: [MvcTools] Fail as soon as possible

When my controller does not return the right object, then the following exception is thrown:

Catchable fatal error: Argument 3 passed to ymcGitWikiDispatcherConfiguration::runResultFilters() must be an instance of ezcMvcResult, null given, called in /var/checkouts/ezcomponents/trunk/MvcTools/src/dispatchers/configurable.php on line 117 and defined in /var/checkouts/ymcgitwiki/src/lib/dispatcher_config.php on line 53

But it would be better to check the return value imediately, maybe already in the createResult method of the controller. Since there are so many different kind of objects, interfaces and so on, it helps much to know the exact place where I did not return the right thing.

Operating System:
PHP Version: (please be specific, like '4.4.3' or '5.1.5')
Database and version:
Browser (and version):