Bugfix: User class was using temporary scfg pointer which would be overwritten

by subsequent logins on other nodes. When the other nodes logged off, the
pointer was bad so a call to the User constructor would cause a segfault.

src/sbbs3/main.cpp

@@ -726,7 +726,7 @@ bool sbbs_t::js_init()
 			break;
 
 		/* User class */
-		if(js_CreateUserClass(js_cx, js_glob, &cfg)==NULL) 
+		if(js_CreateUserClass(js_cx, js_glob, &scfg)==NULL) 
 			break;
 
 		/* Area Objects */