[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

src/py/_pyodide/_future_helper.py

@@ -3,6 +3,7 @@ def set_result(fut, val):
         return
     fut.set_result(val)
 
+
 def set_exception(fut, val):
     if fut.done():
         return