fix: image croping with both width and height given

[fsbraun]

This is a quick fix for #117

[codecov[bot]]

Codecov Report

Merging #118 (8a10a7b) into master (74b589b) will decrease coverage by 0.01%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #118      +/-   ##
==========================================
- Coverage   86.63%   86.62%   -0.01%     
==========================================
  Files         119      119              
  Lines        3082     3081       -1     
  Branches      330      329       -1     
==========================================
- Hits         2670     2669       -1     
  Misses        307      307              
  Partials      105      105              

Impacted Files	Coverage Δ
djangocms_frontend/contrib/image/models.py	67.03% <ø> (-0.36%)	:arrow_down:

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.