Fix issue 3387 LexicalPreservingPrinter adds wrong indentation when adding new comments

[jlerbsc]

Fixes #3387 .

[codecov]

Codecov Report

Merging #3392 (13b29f8) into master (1eeae2c) will increase coverage by 0.000%.
The diff coverage is 66.666%.

@@             Coverage Diff             @@
##              master     #3392   +/-   ##
===========================================
  Coverage     57.384%   57.385%           
  Complexity      2611      2611           
===========================================
  Files            624       624           
  Lines          34389     34394    +5     
  Branches        5817      5819    +2     
===========================================
+ Hits           19734     19737    +3     
- Misses         12685     12686    +1     
- Partials        1970      1971    +1     

Flag	Coverage Δ
AlsoSlowTests	57.385% <66.666%> (+<0.001%)	⬆️
javaparser-core	52.990% <66.666%> (+0.001%)	⬆️
javaparser-symbol-solver	35.497% <0.000%> (-0.006%)	⬇️
jdk-10	57.377% <66.666%> (+<0.001%)	⬆️
jdk-11	57.377% <66.666%> (+<0.001%)	⬆️
jdk-12	57.377% <66.666%> (+0.006%)	⬆️
jdk-13	57.377% <66.666%> (+<0.001%)	⬆️
jdk-14	57.377% <66.666%> (+<0.001%)	⬆️
jdk-15	57.377% <66.666%> (+<0.001%)	⬆️
jdk-16	57.377% <66.666%> (+0.006%)	⬆️
jdk-8	57.382% <66.666%> (+<0.001%)	⬆️
jdk-9	57.377% <66.666%> (+<0.001%)	⬆️
macos-latest	57.382% <66.666%> (+<0.001%)	⬆️
ubuntu-latest	57.376% <66.666%> (+<0.001%)	⬆️
windows-latest	57.382% <66.666%> (+<0.001%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
.../lexicalpreservation/LexicalPreservingPrinter.java	73.475% <66.666%> (-0.209%)	⬇️

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