COMP: return will never be executed after exception thrown.

For:

  /Users/builder/external/ITK/Modules/IO/Mesh/src/itkOBJMeshIO.cxx:526:5:
  warning: 'return' will never be executed [-Wunreachable-code-return]

Change-Id: I8d3c7f95b747919050a6ba7ed45c5433f4d5acdb
ENH: bump to latest scifio-imageio

Updated the SCIFIO-ImageIO to fix a pixel type detection error. It
seemed that the returned pixel type was clashing with the
UNKNOWNCOMPONENTTYPE constant, causing an unknown component error to be
thrown erroneously.

Change-Id: I8f691f82da9288709e48626dd13d102d9df15bff
Merge topic 'exception-return'

6a54cbb3 COMP: return will never be executed after exception thrown.
Merge topic 'fix-pixel-type-detection'

9f6f245a ENH: bump to latest scifio-imageio