LZW: fix one more off-by-one

See http://www.openmicroscopy.org/community/viewtopic.php?f=13&t=7705
merge dev_5_0 -Dorg -Ssuccess-only: PR 1470 (Fix writing of tiff description (rebased onto dev_5_0))
merge dev_5_0 -Dorg -Ssuccess-only: PR 1475 (Decode)
merge dev_5_0 -Dorg -Ssuccess-only: PR 1503 (ImageJ: enable min/max calculation if any series contains float data (rebased onto dev_5_0))
merge dev_5_0 -Dorg -Ssuccess-only: PR 1506 (LZW: fix one more off-by-one (rebased onto dev_5_0))
merge dev_5_0 -Dorg -Ssuccess-only

Repository: openmicroscopy/bioformats
Updating 33b1150..1016a78
Previously merged:
  # PR 1494 sbesson 'Use proper Sphinx markup in Cell Profiler users page (rebased onto dev_5_0)'
  # PR 1490 sbesson 'Update copyright: add support for unicode (rebased onto dev_5_0)'
  # PR 1466 sbesson 'Add bash script for updating copyright headers (rebased onto dev_5_0)'
  # PR 1464 sbesson 'Add script to bump version numbers (rebased onto dev_5_0)'
  # PR 1449 sbesson 'Add python-bioformats to the documentation (rebased onto dev_5_0)'
  # PR 1445 sbesson 'Update Eclipse instructions for Bio-Formats with link to ome-devel thread (rebased onto dev_5_0)'
  # PR 1446 melissalinkert 'Update version numbers to 5.0.7-SNAPSHOT'

Merged PRs:
  # PR 1470 jburel 'Fix writing of tiff description (rebased onto dev_5_0)'
  # PR 1475 jburel 'Decode'
  # PR 1503 melissalinkert 'ImageJ: enable min/max calculation if any series contains float data (rebased onto dev_5_0)'
  # PR 1506 melissalinkert 'LZW: fix one more off-by-one (rebased onto dev_5_0)'

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