Code review.

Author: cykerway

Lib/test/test_asyncio/test_locks.py

@@ -834,7 +834,7 @@ async def c4(result):
         t2 = asyncio.create_task(c2(result))
         t3 = asyncio.create_task(c3(result))
 
-        await asyncio.sleep(0.01)
+        await asyncio.sleep(0)
         self.assertEqual([1], result)
         self.assertTrue(sem.locked())
         self.assertEqual(2, len(sem._waiters))