Fix a IndentationError

## Error Log

I encountered a bug when running the command: python human_eval/execution.py

```
File "/data/humaneval/human-eval/human_eval/execution.py", line 59
    result.append("passed")
IndentationError: expected an indented block
```

## Fix it

<img width="355" alt="1734486214050" src="https://github.com/user-attachments/assets/23ed4e84-34df-48a9-bf6f-0fcb521b47e1" />
