Fix -L printout for rotctl south_zero

src/rot_conf.c

@@ -467,6 +467,10 @@ int frontrot_get_conf(ROT *rot, token_t token, char *val)
         sprintf(val, "%f", rs->max_el);
         break;
 
+    case TOK_SOUTH_ZERO:
+        sprintf(val, "%d", rs->south_zero);
+        break;
+
     default:
         return -RIG_EINVAL;
     }

tests/rotctl_parse.c

@@ -1562,6 +1562,10 @@ int print_conf_list(const struct confparams *cfp, rig_ptr_t data)
                cfp->u.n.step);
         break;
 
+    case RIG_CONF_CHECKBUTTON:
+        printf("\tCheckbox: 0,1\n");
+        break;
+
     case RIG_CONF_COMBO:
         if (!cfp->u.c.combostr[0])
         {