Typing for scrapy/utils, second pass

[wRAR]

No description provided.

[codecov]

Codecov Report

Merging #6003 (9cba193) into master (110d5ff) will decrease coverage by 0.16%.
The diff coverage is 86.19%.

❗ Current head 9cba193 differs from pull request most recent head 8050257. Consider uploading reports for the commit 8050257 to get more accurate results

@@            Coverage Diff             @@
##           master    #6003      +/-   ##
==========================================
- Coverage   89.24%   89.08%   -0.16%     
==========================================
  Files         162      162              
  Lines       11325    11425     +100     
  Branches     1835     1856      +21     
==========================================
+ Hits        10107    10178      +71     
- Misses        927      949      +22     
- Partials      291      298       +7     

Files Changed	Coverage Δ
scrapy/contracts/__init__.py	82.22% <60.00%> (-1.38%)	⬇️
scrapy/utils/trackref.py	76.92% <66.66%> (-6.42%)	⬇️
scrapy/utils/spider.py	75.00% <71.42%> (-5.00%)	⬇️
scrapy/http/response/text.py	98.42% <77.77%> (-1.58%)	⬇️
scrapy/extensions/feedexport.py	95.05% <81.81%> (-0.56%)	⬇️
scrapy/utils/defer.py	96.20% <81.81%> (-1.12%)	⬇️
scrapy/utils/iterators.py	92.43% <84.78%> (-5.51%)	⬇️
scrapy/utils/log.py	88.34% <89.28%> (-1.24%)	⬇️
scrapy/utils/testproc.py	81.39% <90.47%> (+2.44%)	⬆️
scrapy/commands/__init__.py	74.71% <100.00%> (ø)
... and 15 more

[Gallaecio]

I love it when adding type hints includes bug fixes :)

[Gallaecio]

💄 Would it work to move the type hint to line 60/86 above instead of casting here?

PS: I’m not sure we need the comment.

[wRAR]

Casting hides reader.encoding.