Fix sock read timeout

[asvetlov]

Fix #3053

[codecov-io]

Codecov Report

Merging #3055 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #3055      +/-   ##
==========================================
+ Coverage   98.11%   98.11%   +<.01%     
==========================================
  Files          42       42              
  Lines        7739     7743       +4     
  Branches     1348     1349       +1     
==========================================
+ Hits         7593     7597       +4     
  Misses         51       51              
  Partials       95       95

Impacted Files	Coverage Δ
aiohttp/client_proto.py	95.94% <100%> (+0.11%)	⬆️

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This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a [new issue] for related bugs.
If you feel like there's important points made in this discussion, please include those exceprts into that [new issue].
[new issue]: https://github.com/aio-libs/aiohttp/issues/new