Only export the sub-board's internal code *suffix* in the subs.txt.

src/sbbs3/scfg/scfgmsg.c

@@ -471,12 +471,12 @@ export the current message group into.
 						fprintf(stream,"%-20s %s\r\n"
 							,stou(cfg.sub[j]->sname),cfg.sub[j]->lname);
 						continue; }
-					fprintf(stream,"%s\r\n%s\r\n%s\r\n%s%s\r\n%s\r\n%s\r\n"
+					fprintf(stream,"%s\r\n%s\r\n%s\r\n%s\r\n%s\r\n%s\r\n"
 							"%s\r\n%s\r\n%s\r\n"
 						,cfg.sub[j]->lname
 						,cfg.sub[j]->sname
 						,cfg.sub[j]->qwkname
-						,cfg.grp[cfg.sub[j]->grp]->code_prefix,cfg.sub[j]->code_suffix
+						,cfg.sub[j]->code_suffix
 						,cfg.sub[j]->data_dir
 						,cfg.sub[j]->arstr
 						,cfg.sub[j]->read_arstr