PNG_HANDLE_CHUNK_NEVER  101 3rdparty/libpng/pngwrite.c          if (keep != PNG_HANDLE_CHUNK_NEVER &&
PNG_HANDLE_CHUNK_NEVER  277 3rdparty/libpng/pngwrite.c          if (keep != PNG_HANDLE_CHUNK_NEVER &&
PNG_HANDLE_CHUNK_NEVER  391 3rdparty/libpng/pngwrite.c          if (keep != PNG_HANDLE_CHUNK_NEVER &&