Tests: minor fixes.

test/test_settings.py

@@ -28,8 +28,6 @@ Connection: close
     def test_settings_header_read_timeout_update(self):
         self.load('empty')
 
-        r = None
-
         self.conf({'http': { 'header_read_timeout': 4 }}, 'settings')
 
         (resp, sock) = self.http(b"""GET / HTTP/1.1

test/unit.py

@@ -235,7 +235,7 @@ class TestUnit(unittest.TestCase):
 
             if sanitizer_errors:
                 self._print_path_to_log()
-                self.assertFalse(sanitizer_error, 'sanitizer error(s)')
+                self.assertFalse(sanitizer_errors, 'sanitizer error(s)')
 
         if found:
             print('skipped.')