Fix parsing of None with parse_results=True

[pvanderlinden]

Demonstrates #325

[leszekhanusz]

Thanks, I'll take a look

[codecov-commenter]

Codecov Report

Merging #326 (ccc1c83) into master (64c9b5b) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #326   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           26        26           
  Lines         2158      2156    -2     
=========================================
- Hits          2158      2156    -2     

Impacted Files	Coverage Δ
gql/utilities/parse_result.py	100.00% <100.00%> (ø)

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[leszekhanusz]

I'll merge this PR once you confirm that everything is OK for you with your tests.

[pvanderlinden]

I'll merge this PR once you confirm that everything is OK for you with your tests.

Just tested it, and it is working as expected now 👍