Fix code scanning alerts 2

[codecov-commenter]

Codecov Report

Merging #178 (07a47da) into master (892afd3) will increase coverage by 2.67%. The diff coverage is 76.43%.

@@            Coverage Diff             @@
##           master     #178      +/-   ##
==========================================
+ Coverage   33.54%   36.22%   +2.67%     
==========================================
  Files           6        6              
  Lines        2555     2504      -51     
  Branches      470      432      -38     
==========================================
+ Hits          857      907      +50     
+ Misses       1625     1540      -85     
+ Partials       73       57      -16     

Flag	Coverage Δ
unittests	36.22% <76.43%> (+2.67%)	:arrow_up:

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Impacted Files	Coverage Δ
volkswagencarnet/vw_connection.py	12.60% <0.00%> (ø)
volkswagencarnet/vw_vehicle.py	42.25% <79.33%> (+5.95%)	:arrow_up:
volkswagencarnet/vw_utilities.py	96.15% <87.50%> (-3.85%)	:arrow_down:
volkswagencarnet/vw_dashboard.py	56.47% <0.00%> (-0.43%)	:arrow_down:

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[milkboy]

:partying_face: :tada:

Don't "think" I broke too much stuff here, but can't quite test everything (especially the stuff my car can't do). Will add more tests at some point though, so that most stupid errors like accidentally inverting an if-else or something should be caught by unit tests