- message_subdir[0] = (i != 0)? ((uschar *)client_data)[5] : 0;
- sprintf(CS buffer, "%s/input/%s/%s-D", spool_directory, message_subdir,
- (uschar *)client_data);
- f = fopen(CS buffer, "r");
- if (f != NULL) break;
+ uschar * fname;
+ message_subdir[0] = i != 0 ? ((uschar *)client_data)[5] : 0;
+ fname = spool_fname(US"input", message_subdir, US client_data, US"-D");
+ if ((f = fopen(CS fname, "r")))
+ break;