Add elif to handle None crs

[jshermeyer]

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[codecov]

Codecov Report

Merging #185 into dev will decrease coverage by 0.03%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##              dev     #185      +/-   ##
==========================================
- Coverage   70.91%   70.88%   -0.04%     
==========================================
  Files          65       65              
  Lines        4088     4090       +2     
==========================================
  Hits         2899     2899              
- Misses       1189     1191       +2

Impacted Files	Coverage Δ
solaris/utils/core.py	64.86% <0%> (-1.81%)	⬇️

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