Updating libpng to v1.6.39 (#19248)

Author: HCLJason

test/third_party/libpng/pngtest.c

@@ -2028,4 +2028,4 @@ main(void)
 #endif
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_37 Your_png_h_is_not_version_1_6_37;
+typedef png_libpng_version_1_6_39 Your_png_h_is_not_version_1_6_39;

tools/ports/libpng.py

@@ -5,8 +5,8 @@
 
 import os
 
-TAG = '1.6.37'
-HASH = '2ce2b855af307ca92a6e053f521f5d262c36eb836b4810cb53c809aa3ea2dcc08f834aee0ffd66137768a54397e28e92804534a74abb6fc9f6f3127f14c9c338'
+TAG = '1.6.39'
+HASH = '19851afffbe2ffde62d918f7e9017dec778a7ce9c60c75cdc65072f086e6cdc9d9895eb7b207535a84cb5f4ead77ebc2aa9d80025f153662903023e1f7ab9bae'
 
 deps = ['zlib']
 variants = {
@@ -67,9 +67,9 @@ def show():
 
 pnglibconf_h = r'''/* pnglibconf.h - library build configuration */
 
-/* libpng version 1.6.37 */
+/* libpng version 1.6.39 */
 
-/* Copyright (c) 2018-2019 Cosmin Truta */
+/* Copyright (c) 2018-2022 Cosmin Truta */
 /* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */
 
 /* This code is released under the libpng license. */
@@ -341,7 +341,7 @@ def show():
 #define PNG_USER_MEM_SUPPORTED
 #define PNG_USER_TRANSFORM_INFO_SUPPORTED
 #define PNG_USER_TRANSFORM_PTR_SUPPORTED
-/*#undef PNG_WARNINGS_SUPPORTED*/
+#define PNG_WARNINGS_SUPPORTED
 #define PNG_WRITE_16BIT_SUPPORTED
 #define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
 #define PNG_WRITE_BGR_SUPPORTED