Fix queryDelegatorTotalRewards

[alexanderbez]

Return [] instead of null by making the initial value an empty slice literal opposed to nil.

closes: #3705

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• Linked to github-issue with discussion and accepted design OR link to spec that describes this work.

• Wrote tests

• Updated relevant documentation (docs/)

• Added a relevant changelog entry: sdkch add [section] [stanza] [message]

• rereviewed Files changed in the github PR explorer

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For Admin Use:

• Added appropriate labels to PR (ex. wip, ready-for-review, docs)
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[codecov]

Codecov Report

Merging #4078 into develop will decrease coverage by 0.02%.
The diff coverage is 11.11%.

@@             Coverage Diff             @@
##           develop    #4078      +/-   ##
===========================================
- Coverage    59.98%   59.96%   -0.03%     
===========================================
  Files          212      212              
  Lines        15123    15123              
===========================================
- Hits          9072     9068       -4     
- Misses        5431     5435       +4     
  Partials       620      620

[fedekunze]

utACK

[alessio]

ACK