Common subdirectories: ../libpng-1.6.35-orig/arm and ./arm
Common subdirectories: ../libpng-1.6.35-orig/contrib and ./contrib
Common subdirectories: ../libpng-1.6.35-orig/intel and ./intel
Common subdirectories: ../libpng-1.6.35-orig/mips and ./mips
Only in ./: PNG.patch
diff -u ../libpng-1.6.35-orig/pngrutil.c ./pngrutil.c
--- ../libpng-1.6.35-orig/pngrutil.c	2018-07-15 20:58:00.000000000 +0200
+++ ./pngrutil.c	2021-03-24 15:59:38.687108444 +0100
@@ -422,13 +422,6 @@
             png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED;
       }
 
-#if ZLIB_VERNUM >= 0x1290 && \
-   defined(PNG_SET_OPTION_SUPPORTED) && defined(PNG_IGNORE_ADLER32)
-      if (((png_ptr->options >> PNG_IGNORE_ADLER32) & 3) == PNG_OPTION_ON)
-         /* Turn off validation of the ADLER32 checksum in IDAT chunks */
-         ret = inflateValidate(&png_ptr->zstream, 0);
-#endif
-
       if (ret == Z_OK)
          png_ptr->zowner = owner;
 
Common subdirectories: ../libpng-1.6.35-orig/powerpc and ./powerpc
Common subdirectories: ../libpng-1.6.35-orig/projects and ./projects
Common subdirectories: ../libpng-1.6.35-orig/scripts and ./scripts
Common subdirectories: ../libpng-1.6.35-orig/tests and ./tests