Don't unwrap and unwrapped addr, just warn on delete XD

tractor/_discovery.py

@@ -219,13 +219,14 @@ async def maybe_open_portal(
             uid: tuple[str, str] = await reg_portal.run_from_ns(
                 'self',
                 'delete_sockaddr',
-                sockaddr=addr.unwrap(),
+                sockaddr=addr,
             )
-            log.error(
+            log.warning(
                 f'Deleted stale registry entry !\n'
                 f'addr: {addr!r}\n'
                 f'uid: {uid!r}\n'
             )
+            yield None
 
 
 @acm
@@ -309,7 +310,6 @@ async def find_actor(
             yield portals
 
 
-
 @acm
 async def wait_for_actor(
     name: str,