RSValue array cleanup

[GuyAv46]

Describe the changes in the pull request

Remove unnecessary initialization and branching

Mark if applicable

• This PR introduces API changes
• This PR introduces serialization changes

[codecov]

Codecov Report

Attention: Patch coverage is 93.33333% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 85.79%. Comparing base (70fc0b8) to head (7942a4b).

Files	Patch %	Lines
src/rlookup.c	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4612      +/-   ##
==========================================
- Coverage   85.80%   85.79%   -0.02%     
==========================================
  Files         188      188              
  Lines       33120    33098      -22     
==========================================
- Hits        28418    28395      -23     
- Misses       4702     4703       +1     

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