fix listdir count

[codecov[bot]]

Codecov Report

Merging #183 (824dbfd) into master (98422c9) will decrease coverage by 0.07%. The diff coverage is 55.55%.

@@            Coverage Diff             @@
##           master     #183      +/-   ##
==========================================
- Coverage   99.09%   99.01%   -0.08%     
==========================================
  Files          23       23              
  Lines        5063     5069       +6     
==========================================
+ Hits         5017     5019       +2     
- Misses         46       50       +4     

Flag	Coverage Δ
macOS	68.13% <22.22%> (-0.09%)	:arrow_down:
py3.10	98.99% <55.55%> (-0.08%)	:arrow_down:
py3.6	98.99% <55.55%> (-0.08%)	:arrow_down:
py3.7	98.99% <55.55%> (-0.08%)	:arrow_down:
py3.8	98.99% <55.55%> (-0.08%)	:arrow_down:
py3.9	99.01% <55.55%> (-0.08%)	:arrow_down:
ubuntu	96.70% <55.55%> (-0.08%)	:arrow_down:
windows	98.93% <55.55%> (-0.08%)	:arrow_down:
x64	99.01% <55.55%> (-0.08%)	:arrow_down:
x86	98.93% <55.55%> (-0.08%)	:arrow_down:

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Impacted Files	Coverage Δ
smbclient/_io.py	97.78% <42.85%> (-1.25%)	:arrow_down:
smbclient/_os.py	98.48% <100.00%> (ø)

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