Fixed bug re segmentation_log_is procedure during Segmentation Checking

Fixed a small bug.  The procedure call '@segmentation_log_is' had been accidentally commented out, and this was causing the script to crash during segmentation checking.

This bug fix has already been committed to the repository in tier2:/DataAnalysis/PraatScripts/L2T-SegmentationChecking.  So, it is not necessary to re-clone.