Adding new line at the end of test file.

Author: ppisl

graalpython/com.oracle.graal.python.test/src/tests/test_exception.py

@@ -68,4 +68,4 @@ class MyException(Exception):
         e = MyException().with_traceback(tb)
         self.assertIsInstance(e, MyException)
         # TODO this dosn't work yet
-        #self.assertEqual(e.__traceback__, tb)
+        #self.assertEqual(e.__traceback__, tb)