asyncio_micro: IODone syscall should return to coroutine.

Author: pfalcon

asyncio_micro/asyncio_micro.py

@@ -79,7 +79,6 @@ def run_forever(self):
                                 self.remove_reader(ret.obj.fileno())
                             elif ret.op == IO_WRITE:
                                 self.remove_writer(ret.obj.fileno())
-                            continue
                 except StopIteration as e:
                     log.debug("Gen finished: %s", cb)
                     continue