[code_review] StopIteration error in len_common_path()

[suhaibmujahid]

Traceback (most recent call last):
  File "/opt/homebrew/Cellar/[email protected]/3.11.9/Frameworks/Python.framework/Versions/3.11/lib/python3.11/runpy.py", line 198, in _run_module_as_main
    return _run_code(code, main_globals, None,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/[email protected]/3.11.9/Frameworks/Python.framework/Versions/3.11/lib/python3.11/runpy.py", line 88, in _run_code
    exec(code, run_globals)
  File "/Users/smujahid/.vscode/extensions/ms-python.debugpy-2024.10.0-darwin-arm64/bundled/libs/debugpy/adapter/../../debugpy/launcher/../../debugpy/__main__.py", line 39, in <module>
    cli.main()
  File "/Users/smujahid/.vscode/extensions/ms-python.debugpy-2024.10.0-darwin-arm64/bundled/libs/debugpy/adapter/../../debugpy/launcher/../../debugpy/../debugpy/server/cli.py", line 430, in main
    run()
  File "/Users/smujahid/.vscode/extensions/ms-python.debugpy-2024.10.0-darwin-arm64/bundled/libs/debugpy/adapter/../../debugpy/launcher/../../debugpy/../debugpy/server/cli.py", line 317, in run_module
    run_module_as_main(options.target, alter_argv=True)
  File "/Users/smujahid/.vscode/extensions/ms-python.debugpy-2024.10.0-darwin-arm64/bundled/libs/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_runpy.py", line 238, in _run_module_as_main
    return _run_code(code, main_globals, None,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/smujahid/.vscode/extensions/ms-python.debugpy-2024.10.0-darwin-arm64/bundled/libs/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_runpy.py", line 124, in _run_code
    exec(code, run_globals)
  File "/Users/smujahid/repos/mozilla/bugbug/scripts/code_review_tool_evaluator.py", line 253, in <module>
    main(args.variants, args.review_request_ids)
  File "/Users/smujahid/repos/mozilla/bugbug/scripts/code_review_tool_evaluator.py", line 194, in main
    comments = tool.run(patch)
               ^^^^^^^^^^^^^^^
  File "/Users/smujahid/repos/mozilla/bugbug/venv/lib/python3.11/site-packages/tenacity/__init__.py", line 336, in wrapped_f
    return copy(f, *args, **kw)
           ^^^^^^^^^^^^^^^^^^^^
  File "/Users/smujahid/repos/mozilla/bugbug/venv/lib/python3.11/site-packages/tenacity/__init__.py", line 475, in __call__
    do = self.iter(retry_state=retry_state)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/smujahid/repos/mozilla/bugbug/venv/lib/python3.11/site-packages/tenacity/__init__.py", line 376, in iter
    result = action(retry_state)
             ^^^^^^^^^^^^^^^^^^^
  File "/Users/smujahid/repos/mozilla/bugbug/venv/lib/python3.11/site-packages/tenacity/__init__.py", line 398, in <lambda>
    self._add_action_func(lambda rs: rs.outcome.result())
                                     ^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/[email protected]/3.11.9/Frameworks/Python.framework/Versions/3.11/lib/python3.11/concurrent/futures/_base.py", line 449, in result
    return self.__get_result()
           ^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/[email protected]/3.11.9/Frameworks/Python.framework/Versions/3.11/lib/python3.11/concurrent/futures/_base.py", line 401, in __get_result
    raise self._exception
  File "/Users/smujahid/repos/mozilla/bugbug/venv/lib/python3.11/site-packages/tenacity/__init__.py", line 478, in __call__
    result = fn(*args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^
  File "/Users/smujahid/repos/mozilla/bugbug/bugbug/tools/code_review.py", line 1050, in run
    requested_functions = request_for_function_declarations(
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/smujahid/repos/mozilla/bugbug/bugbug/tools/code_review.py", line 810, in request_for_function_declarations
    definitions = solve_conflict_definitions(
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/smujahid/repos/mozilla/bugbug/bugbug/tools/code_review.py", line 767, in solve_conflict_definitions
    functions_common_path = [
                            ^
  File "/Users/smujahid/repos/mozilla/bugbug/bugbug/tools/code_review.py", line 768, in <listcomp>
    (len_common_path(target_path, fun.file), fun) for fun in functions
     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/smujahid/repos/mozilla/bugbug/bugbug/tools/code_review.py", line 758, in len_common_path
    max_common_path_length = next(
                             ^^^^^
StopIteration