Fixed typo in go_to_group().

Rev: lib/modules/Protocols.pmod/NNTP.pmod:1.6

lib/modules/Protocols.pmod/NNTP.pmod

@@ -112,7 +112,7 @@ class client
   {
     failsafe_command("group "+group);
     object o=Group();
-    o->grop=group;
+    o->group=group;
     sscanf(rest,"%d %d %d",int num,o->min,o->max);
     current_group=o;
     return o;