Fix CabbageDevelopment#4

Author: selplacei

qasync/__init__.py

@@ -656,8 +656,7 @@ def outer_decorator(fn):
         @Slot(*args)
         @functools.wraps(fn)
         def wrapper(*args, **kwargs):
-            asyncio.ensure_future(fn(*args, **kwargs))
-
+            return asyncio.ensure_future(fn(*args, **kwargs))
         return wrapper
 
     return outer_decorator