HHH-8428 comment & cleanup

Author: brmeyer

hibernate-core/src/main/java/org/hibernate/internal/SessionFactoryRegistry.java

@@ -132,11 +132,8 @@ public void removeSessionFactory(
 	public SessionFactory getNamedSessionFactory(String name) {
         LOG.debugf( "Lookup: name=%s", name );
 		final String uuid = nameUuidXref.get( name );
-		if ( uuid != null ) {
-			return getSessionFactory( uuid );
-		} else {
-			return null;
-		}
+		// protect against NPE -- see HHH-8428
+		return uuid == null ? null : getSessionFactory( uuid );
 	}
 
 	public SessionFactory getSessionFactory(String uuid) {