[devel] Updated comments that mention 1.5.3; changed them to 1.5.4.
diff --git a/png.h b/png.h
index ed470d1..780b45e 100644
--- a/png.h
+++ b/png.h
@@ -900,8 +900,9 @@
#define PNG_TRANSFORM_STRIP_FILLER_AFTER 0x1000 /* write only */
/* Added to libpng-1.4.0 */
#define PNG_TRANSFORM_GRAY_TO_RGB 0x2000 /* read only */
-/* Added to libpng-1.5.3 */
+/* Added to libpng-1.5.4 */
#define PNG_TRANSFORM_EXPAND_16 0x4000 /* read only */
+#define PNG_TRANSFORM_CHOP_16 0x8000 /* read only */
/* Flags for MNG supported features */
#define PNG_FLAG_MNG_EMPTY_PLTE 0x01
@@ -1404,7 +1405,7 @@
#ifdef PNG_READ_BACKGROUND_SUPPORTED
/* Handle alpha and tRNS by replacing with a background color. Prior to
- * libpng-1.5.3 this API must not be called before the PNG file header has been
+ * libpng-1.5.4 this API must not be called before the PNG file header has been
* read. Doing so will result in unexpected behavior and possible warnings or
* errors if the PNG file contains a bKGD chunk.
*/