nit

Author: Neenu1995

java-bigquery/google-cloud-bigquery-jdbc/src/main/java/com/google/cloud/bigquery/jdbc/BigQueryConnection.java

@@ -839,7 +839,7 @@ private void rollbackImpl() throws SQLException {
         beginTransaction();
       }
     } catch (InterruptedException | BigQueryException ex) {
-      throw new BigQueryJdbcException(ex, "Failed to rollback transaction");
+      throw new BigQueryJdbcException("Failed to rollback transaction", ex);
     }
   }