[libpng16] Fix some color types and bit depths in new pngsuite files
diff --git a/contrib/pngsuite/iftbbn2c16.png b/contrib/pngsuite/iftbbn2c16.png
index e3b4b88..64a9cdf 100644
--- a/contrib/pngsuite/iftbbn2c16.png
+++ b/contrib/pngsuite/iftbbn2c16.png
Binary files differ
diff --git a/contrib/pngsuite/iftbgn2c16.png b/contrib/pngsuite/iftbgn2c16.png
index e3b4b88..64a9cdf 100644
--- a/contrib/pngsuite/iftbgn2c16.png
+++ b/contrib/pngsuite/iftbgn2c16.png
Binary files differ
diff --git a/contrib/pngsuite/iftbrn2c08.png b/contrib/pngsuite/iftbrn2c08.png
index e358a1f..08ebbae 100644
--- a/contrib/pngsuite/iftbrn2c08.png
+++ b/contrib/pngsuite/iftbrn2c08.png
Binary files differ
diff --git a/contrib/pngsuite/iftbwn0g16.png b/contrib/pngsuite/iftbwn0g16.png
index a1fe4f9..4b7537e 100644
--- a/contrib/pngsuite/iftbwn0g16.png
+++ b/contrib/pngsuite/iftbwn0g16.png
Binary files differ