PNG_FREE_SPLT     536 png.c             if ((mask & PNG_FREE_SPLT) & info_ptr->free_me)
PNG_FREE_SPLT     555 png.c                         png_free_data(png_ptr, info_ptr, PNG_FREE_SPLT, (int)i);
PNG_FREE_SPLT    1004 pngset.c          info_ptr->free_me |= PNG_FREE_SPLT;