asyncio: Fix misc whitespace issues.

Lib/asyncio/streams.py

@@ -14,6 +14,7 @@ from . import tasks
 
 _DEFAULT_LIMIT = 2**16
 
+
 class IncompleteReadError(EOFError):
     """
     Incomplete read error. Attributes:

Lib/test/test_asyncio/test_tasks.py

@@ -379,7 +379,6 @@ class TaskTests(unittest.TestCase):
         self.assertAlmostEqual(0.1, loop.time())
         self.assertEqual(foo_running, False)
 
-
     def test_wait_for_blocking(self):
         loop = test_utils.TestLoop()
         self.addCleanup(loop.close)
@@ -388,7 +387,9 @@ class TaskTests(unittest.TestCase):
         def coro():
             return 'done'
 
-        res = loop.run_until_complete(asyncio.wait_for(coro(), timeout=None, loop=loop))
+        res = loop.run_until_complete(asyncio.wait_for(coro(),
+                                                       timeout=None,
+                                                       loop=loop))
         self.assertEqual(res, 'done')
 
     def test_wait_for_with_global_loop(self):