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

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

Author: pre-commit-ci[bot]

mypyc/irbuild/for_helpers.py

@@ -1259,7 +1259,7 @@ def gen_cleanup(self) -> None:
         for gen in self.gens:
             gen.gen_cleanup()
 
- 
+
 def get_expr_length(expr: Expression) -> int | None:
     if isinstance(expr, (StrExpr, BytesExpr)):
         return len(expr.value)