Issue #790 - Fix application controller panic

[alexmt]

No description provided.

[codecov-io]

Codecov Report

Merging #791 into master will increase coverage by 0.02%.
The diff coverage is 62.5%.

@@           Coverage Diff            @@
##           master   #791      +/-   ##
========================================
+ Coverage   26.97%    27%   +0.02%     
========================================
  Files          41     41              
  Lines        6353   6359       +6     
========================================
+ Hits         1714   1717       +3     
- Misses       4400   4401       +1     
- Partials      239    241       +2

Impacted Files	Coverage Δ
util/diff/diff.go	60.52% <62.5%> (-0.44%)	⬇️

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[dthomson25]

LGTM. Can you add a test after publishing the patch?

[alexmt]

Thank you for review @dthomson25 . Added test to PR