fix empty lines detection between imports

[AlexHaxe]

No description provided.

[codecov-io]

Codecov Report

Merging #427 into dev will increase coverage by 0.03%.
The diff coverage is 95.71%.

@@            Coverage Diff             @@
##              dev     #427      +/-   ##
==========================================
+ Coverage   91.42%   91.46%   +0.03%     
==========================================
  Files         130      130              
  Lines        9812     9856      +44     
  Branches      358      359       +1     
==========================================
+ Hits         8971     9015      +44     
+ Misses        526      525       -1     
- Partials      315      316       +1

Impacted Files	Coverage Δ
src/checkstyle/config/ConfigParser.hx	83.96% <66.66%> (-0.07%)	⬇️
...style/checks/whitespace/ExtendedEmptyLinesCheck.hx	95.2% <98.43%> (+0.52%)	⬆️

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