Fix bug on getIssueIDsByRepoID

[lunny]

As title.

[codecov-commenter]

Codecov Report

Merging #16119 (56bed92) into main (5fef041) will increase coverage by 0.06%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main   #16119      +/-   ##
==========================================
+ Coverage   44.17%   44.24%   +0.06%     
==========================================
  Files         694      694              
  Lines       82323    82323              
==========================================
+ Hits        36367    36420      +53     
+ Misses      40072    40023      -49     
+ Partials     5884     5880       -4     

Impacted Files	Coverage Δ
models/issue.go	58.87% <100.00%> (ø)
models/unit.go	46.57% <0.00%> (-2.74%)	⬇️
services/pull/pull.go	43.37% <0.00%> (-0.46%)	⬇️
modules/queue/workerpool.go	53.81% <0.00%> (+0.76%)	⬆️
services/gitdiff/gitdiff.go	73.76% <0.00%> (+1.41%)	⬆️
modules/indexer/issues/indexer.go	61.53% <0.00%> (+1.53%)	⬆️
services/pull/patch.go	55.93% <0.00%> (+1.69%)	⬆️
modules/log/event.go	61.79% <0.00%> (+1.88%)	⬆️
services/pull/check.go	28.27% <0.00%> (+2.75%)	⬆️
services/pull/temp_repo.go	29.78% <0.00%> (+3.19%)	⬆️
... and 4 more

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