png_free_buffer_list  881 pngpriv.h      PNG_INTERNAL_FUNCTION(void,png_free_buffer_list,(png_structrp png_ptr,
png_free_buffer_list 1503 pngset.c                   png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list);
png_free_buffer_list  934 pngwrite.c        png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list);
png_free_buffer_list 1027 pngwutil.c              png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list->next);