fix: returned error not be accept correctly

[pefish]

No description provided.

[arajasek]

Thanks!

[magik6k]

(CI: https://github.com/filecoin-project/lotus/runs/4693799041)

[codecov]

Codecov Report

Merging #7852 (f82a262) into master (921fda9) will decrease coverage by 5.10%.
The diff coverage is 25.00%.

@@            Coverage Diff             @@
##           master    #7852      +/-   ##
==========================================
- Coverage   39.46%   34.35%   -5.11%     
==========================================
  Files         654      648       -6     
  Lines       70170    69883     -287     
==========================================
- Hits        27690    24009    -3681     
- Misses      37727    41443    +3716     
+ Partials     4753     4431     -322     

Impacted Files	Coverage Δ
storage/wdpost_run.go	69.47% <25.00%> (-0.15%)	⬇️
blockstore/splitstore/visitor.go	0.00% <0.00%> (-100.00%)	⬇️
chain/events/state/mock/state.go	0.00% <0.00%> (-100.00%)	⬇️
blockstore/badger/blockstore_test_suite.go	0.00% <0.00%> (-96.50%)	⬇️
tools/stats/headbuffer/head_buffer.go	0.00% <0.00%> (-90.00%)	⬇️
chain/events/state/mock/api.go	0.00% <0.00%> (-85.72%)	⬇️
blockstore/splitstore/markset_map.go	0.00% <0.00%> (-81.25%)	⬇️
blockstore/splitstore/markset.go	0.00% <0.00%> (-75.00%)	⬇️
journal/types.go	13.33% <0.00%> (-73.34%)	⬇️
lib/stati/covar.go	0.00% <0.00%> (-73.22%)	⬇️
... and 138 more

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