Removed redundant type check in Logger::forcedLog(). The same check is made in LoggerLoggingEvent constructor. The Exception type hint for $throwable was removed from the constructor to prevent errors if a non-exception is given here. Any non-exceptions will just be ignored anyway.
logging/log4php/trunk/src/main/php/Logger.php
logging/log4php/trunk/src/main/php/LoggerLoggingEvent.php