{
BOOL is_hdr_file = srcfd < 0;
const uschar * suffix = srcfd < 0 ? US"H" : US"D";
int dstfd;
const uschar * filename = string_sprintf("%s-%s", message_id, suffix);
const uschar * srcpath = spool_fname(US"input", message_subdir, message_id, suffix);
{
BOOL is_hdr_file = srcfd < 0;
const uschar * suffix = srcfd < 0 ? US"H" : US"D";
int dstfd;
const uschar * filename = string_sprintf("%s-%s", message_id, suffix);
const uschar * srcpath = spool_fname(US"input", message_subdir, message_id, suffix);