PNG_FREE_HIST     489 3rdparty/libpng/png.c    if ((mask & PNG_FREE_HIST)  & info_ptr->free_me)
PNG_FREE_HIST    1065 3rdparty/libpng/pngread.c    if (png_ptr->free_me & PNG_FREE_HIST)
PNG_FREE_HIST    1067 3rdparty/libpng/pngread.c    png_ptr->free_me &= ~PNG_FREE_HIST;
PNG_FREE_HIST     195 3rdparty/libpng/pngset.c    png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
PNG_FREE_HIST     214 3rdparty/libpng/pngset.c    info_ptr->free_me |= PNG_FREE_HIST;