commit 823c2d80dcea0d29cc3922c8599d250515a44f33
author Cosmin Truta <ctruta@gmail.com> Tue Dec 31 22:05:03 2024 +0200
committer Cosmin Truta <ctruta@gmail.com> Thu Jan 02 11:15:20 2025 +0200
tree e628b4c373fa701459a648631640beb2d2b0a3fa
parent 75748d93ce7b6084381d369ec79d1587b5793f69

[libpng16] fix: Update the cICP support for better compliance with PNG-3

Apply the following corrections and improvements:
 * Add a validity check in `png_set_cICP`.
 * Fix the ordering check in `png_handle_cICP`.
 * Add a multiplicity check in `png_handle_cICP`.
 * Optimize the implementation of `png_write_cICP`.
 * Remove an unnecessary preprocessor guard from pngtest.c.
 * Update the dependency declaration in pnglibconf.dfa.
 * Fix the indentation where necessary.

This is a cherry-pick of commit c2a02691df1ecf51b7c97142752a7034350cb1f6
from branch 'libpng18'.