https://lists.fedoraproject.org/pipermail/scm-commits/2012-January/724580.html
https://lists.fedoraproject.org/pipermail/scm-commits/2012-June/791063.html
https://github.com/tux4kids/t4kcommon/commit/495af34788dcbae69f53a77d0bd70848b08b2de3
--- src/t4k_loaders.c.orig	2011-04-07 21:46:07.000000000 -0500
+++ src/t4k_loaders.c	2014-10-03 02:28:34.000000000 -0500
@@ -1028,12 +1028,7 @@
       {
         png_init_io(png_ptr, fi);
 
-        info_ptr->width = surf->w;
-        info_ptr->height = surf->h;
-        info_ptr->bit_depth = 8;
-        info_ptr->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
-        info_ptr->interlace_type = 1;
-        info_ptr->valid = 0;	/* will be updated by various png_set_FOO() functions */
+        png_set_IHDR(png_ptr, info_ptr, surf->w, surf->h, 8, PNG_COLOR_TYPE_RGB_ALPHA, 1, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
 
         png_set_sRGB_gAMA_and_cHRM(png_ptr, info_ptr,
                        PNG_sRGB_INTENT_PERCEPTUAL);