- Do not free LALGSequenceIter* from within XLALGSequenceNext(), as this
  interacts badly with SWIG's parent tracking for XLALGetGSeqSnglBurst().
  Instead XLALGSequenceNext() returns a boolean, indicating whether iteration
  should continue, and calling (C) code must free iterator themselves.
  (Python code will free the iterator automatically once it is no longer needed.)
Original: 120eea010713db4010313d5b61585358f5f8804b