use our normal bracing style
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index 5f7c0eb..149b76e 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -657,8 +657,9 @@
         }
         PyEval_SetCoroutineWrapper(wrapper);
     }
-    else
+    else {
         PyEval_SetCoroutineWrapper(NULL);
+    }
     Py_RETURN_NONE;
 }