Only check status_code if call_url returns response

[Zlopez]

Signed-off-by: Michal Konečný [email protected]

[codecov-io]

Codecov Report

Merging #833 into master will increase coverage by 0.14%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #833      +/-   ##
==========================================
+ Coverage   97.23%   97.37%   +0.14%     
==========================================
  Files          61       61              
  Lines        3466     3651     +185     
  Branches      492      492              
==========================================
+ Hits         3370     3555     +185     
  Misses         58       58              
  Partials       38       38

Impacted Files	Coverage Δ
anitya/lib/backends/pear.py	100% <0%> (ø)	⬆️
anitya/lib/backends/stackage.py	100% <0%> (ø)	⬆️
anitya/lib/backends/gnu.py	100% <0%> (ø)	⬆️
anitya/lib/exceptions.py	100% <0%> (ø)	⬆️
anitya/lib/backends/crates.py	100% <0%> (ø)	⬆️
anitya/lib/backends/cran.py	100% <0%> (ø)	⬆️
anitya/lib/backends/github.py	100% <0%> (ø)	⬆️
anitya/lib/backends/google.py	100% <0%> (ø)	⬆️
anitya/lib/backends/launchpad.py	100% <0%> (ø)	⬆️
anitya_schema/anitya_schema/project_messages.py	100% <0%> (ø)	⬆️
... and 28 more

---

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[codecov-io]

Codecov Report

Merging #833 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #833   +/-   ##
=======================================
  Coverage   97.36%   97.36%           
=======================================
  Files          61       61           
  Lines        3650     3650           
  Branches      492      492           
=======================================
  Hits         3554     3554           
  Misses         58       58           
  Partials       38       38

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 415e223...335c63d. Read the comment docs.