fix

Author: jonathanmetzman

src/clusterfuzz/_internal/bot/tasks/utasks/fuzz_task.py

@@ -2074,6 +2074,8 @@ def _to_engine_output(output: str, crash_path: str, return_code: int,
       return_code=return_code,
       timestamp=proto_timestamp)
 
+  if crash_path is None:
+    return engine_output
   if os.path.getsize(crash_path) > 10 * 1024**2:
     return engine_output
   with open(crash_path, 'rb') as fp: