Small hotfixes for chained filesystems

[timkpaine]

No description provided.

[github-actions]

Test Results

12 tests  ±0   10 ✅ ±0   0s ⏱️ ±0s
 1 suites ±0    2 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 4cac321. ± Comparison against base commit baf842f.

[codecov]

Codecov Report

❌ Patch coverage is 25.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.35%. Comparing base (3f88e1d) to head (4cac321).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
fsspec_python/fs.py	25.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #9      +/-   ##
==========================================
- Coverage   87.01%   85.35%   -1.67%     
==========================================
  Files           5        5              
  Lines         154      157       +3     
  Branches       26       27       +1     
==========================================
  Hits          134      134              
- Misses         10       12       +2     
- Partials       10       11       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.