Propagate the nested exception when an EventListener init fails

git-svn-id: https://svn.jboss.org/repos/hibernate/core/trunk@14618 1b8cb986-b30d-0410-93ca-fae66ebed9b2

core/src/main/java/org/hibernate/event/EventListeners.java

@@ -172,7 +172,7 @@ public class EventListeners extends Cloneable implements Serializable {
 				}
 			}
 			catch ( Exception e ) {
-				throw new AssertionFailure( "could not process listeners" );
+				throw new AssertionFailure( "could not process listeners", e );
 			}
 		}
 	}