sinttest: only append subdescriptions if there are any

smack-integration-test/src/main/java/org/igniterealtime/smack/inttest/SmackIntegrationTestFramework.java

@@ -746,8 +746,10 @@ public class SmackIntegrationTestFramework {
                 .append(method.getName())
                 .append(" (")
                 .append(testType.name());
+            if (subdescriptons != null) {
                 sb.append(", ");
                 StringUtils.appendTo(Arrays.asList(subdescriptons), sb);
+            }
             sb.append(')');
 
             stringCache = sb.toString();