[WIP] don't call method of destroyed webContents

[icecream17]

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Description of the Change

The ubuntu tests have been failing, even for perfectly valid prs

One of the complained errors says "Attempting to call a function in a renderer window that has been closed or released." EDIT: This appears in all the tests, so this error (or warning?) doesn't actually fail the tests

So I think this attempt removes the function call - and hopefully fixes the tests

Screenshot or Gif

Applicable Issues

[codecov[bot]]

Codecov Report

Merging #2722 (c9ecdfe) into master (2053290) will increase coverage by 0.01%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2722      +/-   ##
==========================================
+ Coverage   93.46%   93.47%   +0.01%     
==========================================
  Files         237      237              
  Lines       13213    13213              
  Branches     1900     1900              
==========================================
+ Hits        12349    12351       +2     
+ Misses        864      862       -2     

Impacted Files	Coverage Δ
lib/git-shell-out-strategy.js	100.00% <0.00%> (+0.18%)	:arrow_up:
lib/atom/gutter.js	92.85% <0.00%> (+2.38%)	:arrow_up:

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[icecream17]

Okay, everything still seems to be the same....