make it if the user did not

Author: baltzell

common-tools/clas-detector/src/main/java/org/jlab/detector/serial/SerialHoncho.java

@@ -98,6 +98,7 @@ public void closure(HipoWriterSorted writer) {
         Bank cfg = new Bank(runConfig, 1);
         cfg.putInt("run",0,run); 
         writer.addEvent(getUnixEvent(cfg),1);
+        if (helicitySequence == null) updateHelicitySequence();
         helicitySequence.writeFlips(writer, 1);
     }