Fix bugbear lints

Author: sigmavirus24

src/flake8/checker.py

@@ -70,7 +70,8 @@ def _mp_init(argv: Sequence[str]) -> None:
     signal.signal(signal.SIGINT, signal.SIG_IGN)
 
     try:
-        _mp_plugins, _mp_options  # for `fork` this'll already be set
+        # for `fork` this'll already be set
+        _mp_plugins, _mp_options # noqa: B018
     except NameError:
         plugins, options = parse_args(argv)
         _mp_plugins, _mp_options = plugins.checkers, options

tests/unit/plugins/reporter_test.py

@@ -11,7 +11,7 @@
 
 
 def _opts(**kwargs):
-    kwargs.setdefault("quiet", 0),
+    kwargs.setdefault("quiet", 0)
     kwargs.setdefault("color", "never")
     kwargs.setdefault("output_file", None)
     return argparse.Namespace(**kwargs)