go/runtime: Minor fixes

[peternose]

No description provided.

[netlify]

✅ Deploy Preview for oasisprotocol-oasis-core canceled.

Name	Link
🔨 Latest commit	eede756
🔍 Latest deploy log	https://app.netlify.com/projects/oasisprotocol-oasis-core/deploys/69e298c09587b7000836c496

[codecov]

Codecov Report

❌ Patch coverage is 10.52632% with 17 lines in your changes missing coverage. Please review.
✅ Project coverage is 64.65%. Comparing base (6330716) to head (eede756).
⚠️ Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
go/runtime/bundle/manager.go	0.00%	6 Missing and 1 partial ⚠️
go/runtime/bundle/bundle.go	0.00%	4 Missing and 1 partial ⚠️
go/runtime/bundle/registry.go	0.00%	3 Missing ⚠️
go/runtime/registry/handler_rofl_mgmt.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6505      +/-   ##
==========================================
+ Coverage   64.56%   64.65%   +0.09%     
==========================================
  Files         698      698              
  Lines       68220    68233      +13     
==========================================
+ Hits        44043    44118      +75     
+ Misses      19127    19105      -22     
+ Partials     5050     5010      -40     

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