bench/emper: fix io-stealing-pipe-no-comp-lockless

bench/emper.py

@@ -103,7 +103,7 @@ FLAVORS: Flavors = {
     'io-stealing-pipe-no-comp-lockless': {
         'meson_options':
         ('-Dio_stealing=true -Dworker_sleep_strategy=pipe'
-         ' -Dio_completer_behavior=none -Dio_lockless_cq=false'),
+         ' -Dio_completer_behavior=none -Dio_lockless_cq=true'),
     },
     'no-stats': {
         'meson_options': '-Dstats=False'