Prevent launching client thread on exit

[Gavriliuk]

No description provided.

[codecov]

Codecov Report

Merging #2277 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2277      +/-   ##
==========================================
+ Coverage   73.82%   73.84%   +0.01%     
==========================================
  Files         137      137              
  Lines       21432    21430       -2     
==========================================
+ Hits        15823    15825       +2     
+ Misses       5609     5605       -4     

Impacted Files	Coverage Δ
examples/pxScene2d/src/pxScene2d.cpp	73.98% <0.00%> (-0.03%)	⬇️
examples/pxScene2d/src/pxTextBox.cpp	93.01% <0.00%> (+0.54%)	⬆️

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