Only log Error on getLastCommitStatus error to let pull list still be visible

[6543]

as title

[codecov-commenter]

Codecov Report

Merging #15716 (8a28f29) into master (5c5cfd6) will decrease coverage by 0.00%.
The diff coverage is 42.85%.

@@            Coverage Diff             @@
##           master   #15716      +/-   ##
==========================================
- Coverage   43.89%   43.88%   -0.01%     
==========================================
  Files         678      678              
  Lines       81868    81878      +10     
==========================================
+ Hits        35933    35936       +3     
- Misses      40086    40093       +7     
  Partials     5849     5849              

Impacted Files	Coverage Δ
modules/nosql/manager_redis.go	0.00% <0.00%> (ø)
services/pull/pull.go	43.83% <0.00%> (-0.11%)	⬇️
routers/repo/release.go	24.39% <66.66%> (+1.19%)	⬆️
models/unit.go	46.57% <0.00%> (-2.74%)	⬇️
routers/repo/view.go	40.66% <0.00%> (-0.59%)	⬇️
models/repo_list.go	77.82% <0.00%> (+0.77%)	⬆️

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