Added extra line as lint was complaining kernc#316

Author: zlpatel

backtesting/test/_test.py

@@ -858,11 +858,11 @@ def next(self):
                 super().next()
                 if not self.position and self.data.Close > self.sma:
                     self.buy()
-                    
+
         stats = Backtest(GOOG, S).run()
         self.assertEqual(stats['# Trades'], 57)
 
-        
+
 class TestUtil(TestCase):
     def test_as_str(self):
         def func():