Fix missing defer prepareTestEnv(t)() on some tests

[guillep2k]

Just a couple of defer prepareTestEnv(t)() I've just spotted.

[codecov-io]

Codecov Report

Merging #9906 into master will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #9906      +/-   ##
==========================================
+ Coverage    42.3%   42.31%   +<.01%     
==========================================
  Files         607      607              
  Lines       79353    79353              
==========================================
+ Hits        33573    33578       +5     
+ Misses      41639    41636       -3     
+ Partials     4141     4139       -2

Impacted Files	Coverage Δ
modules/queue/workerpool.go	41.2% <0%> (-2.58%)	⬇️
models/gpg_key.go	55.03% <0%> (-0.56%)	⬇️
models/repo.go	49.89% <0%> (+0.13%)	⬆️
services/pull/patch.go	69.81% <0%> (+1.88%)	⬆️
modules/log/file.go	77.62% <0%> (+2.09%)	⬆️
services/pull/temp_repo.go	34.18% <0%> (+2.56%)	⬆️
modules/process/manager.go	78.31% <0%> (+3.61%)	⬆️

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[guillep2k]

Maybe add "skip-changelog" to this.

[6543]

Ping lgtm