PNG_GRAY_COLORMAP_ENTRIES 2220 pngread.c                  if (PNG_GRAY_COLORMAP_ENTRIES > image->colormap_entries)
PNG_GRAY_COLORMAP_ENTRIES 2346 pngread.c                     if (PNG_GRAY_COLORMAP_ENTRIES > image->colormap_entries)
PNG_GRAY_COLORMAP_ENTRIES 2492 pngread.c                     if (PNG_GRAY_COLORMAP_ENTRIES > image->colormap_entries)