fix: cannot decompress tar file correctly

[LinuxSuRen]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 61.56%. Comparing base (ca9209c) to head (3051b0b).

Files	Patch %	Lines
pkg/compress/gzip.go	68.75%	3 Missing and 2 partials ⚠️
pkg/compress/xz.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #453      +/-   ##
==========================================
+ Coverage   60.57%   61.56%   +0.99%     
==========================================
  Files          64       64              
  Lines        3465     3445      -20     
==========================================
+ Hits         2099     2121      +22     
+ Misses       1261     1215      -46     
- Partials      105      109       +4     

Flag	Coverage Δ
unittests	61.56% <66.66%> (+0.99%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

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