Better bounds checking in Jp2Image::printStructure (backport #1759)

[mergify]

This is an automatic backport of pull request #1759 done by Mergify.

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[codecov]

Codecov Report

Merging #1762 (94ff3f4) into main (c2b5211) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #1762   +/-   ##
=======================================
  Coverage   67.29%   67.29%           
=======================================
  Files         151      151           
  Lines       20797    20799    +2     
=======================================
+ Hits        13995    13997    +2     
  Misses       6802     6802           

Impacted Files	Coverage Δ
src/jp2image.cpp	84.57% <100.00%> (+0.07%)	⬆️

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