Improve test coverage with a "correctly" damaged palette index test

The PNG IDAT did not include a '255' entry, the highest entry is '254',
this corrects the test PNG to have a palette with only 254 entries so
that it triggers the palette index checks.

Signed-off-by: John Bowler <jbowler@acm.org>
Signed-off-by: Cosmin Truta <ctruta@gmail.com>
This commit is contained in:
John Bowler 2024-01-16 19:11:27 -08:00 committed by Cosmin Truta
parent f9348b77da
commit da109d3e6e

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