Fix wrong assignment of --nonce

src/sso/ssotool.c

@@ -213,7 +213,7 @@ int main(int argc, char **argv) {
       domain = optarg;
       break;
     case 'n':
-      domain = optarg;
+      nonce = optarg;
       break;
     default:
       die_and_help("Error parsing options");