[trac547] added a helpful comment for anyone who has concern about the test case

src/bin/stats/tests/b10-stats-httpd_test.py

@@ -409,6 +409,8 @@ class TestStatsHttpd(unittest.TestCase):
         self.assertEqual(ret, 1)
 
     def test_for_without_B10_FROM_SOURCE(self):
+        # just lets it go through the code without B10_FROM_SOURCE env
+        # variable
         if "B10_FROM_SOURCE" in os.environ:
             tmppath = os.environ["B10_FROM_SOURCE"]
             os.environ.pop("B10_FROM_SOURCE")