Fix tests on i386

[avalentino]

See https://tests.reproducible-builds.org/debian/rb-pkg/unstable/i386/satpy.html.

• Tests passed
• Passes flake8 satpy

[mraspaud]

LGTM, good catch!

[mraspaud]

LGTM

[coveralls]

Coverage decreased (-0.003%) to 90.062% when pulling 56e1018 on avalentino:fix-tests-on-i386 into 1ea1383 on pytroll:master.

[coveralls]

Coverage decreased (-0.003%) to 90.062% when pulling 56e1018 on avalentino:fix-tests-on-i386 into 1ea1383 on pytroll:master.

[codecov]

Codecov Report

Merging #1315 into master will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1315      +/-   ##
==========================================
- Coverage   90.06%   90.06%   -0.01%     
==========================================
  Files         220      220              
  Lines       32419    32420       +1     
==========================================
  Hits        29198    29198              
- Misses       3221     3222       +1     

Impacted Files	Coverage Δ
satpy/tests/reader_tests/test_seviri_l1b_hrit.py	100.00% <100.00%> (ø)
satpy/scene.py	90.34% <0.00%> (-0.18%)	⬇️

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