move my_visitor outside the method to allow the templating to work on gcc
move my_visitor outside the method to allow the templating to work on gcc

mtCarto/PDAL,verma/PDAL,verma/PDAL,jwomeara/PDAL,lucadelu/PDAL,Sciumo/PDAL,jwomeara/PDAL,verma/PDAL,mpgerlek/PDAL-old,boundlessgeo/PDAL,radiantbluetechnologies/PDAL,lucadelu/PDAL,verma/PDAL,Sciumo/PDAL,boundlessgeo/PDAL,mtCarto/PDAL,DougFirErickson/PDAL,mpgerlek/PDAL-old,DougFirErickson/PDAL,DougFirErickson/PDAL,mpgerlek/PDAL-old,jwomeara/PDAL,mtCarto/PDAL,radiantbluetechnologies/PDAL,boundlessgeo/PDAL,boundlessgeo/PDAL,DougFirErickson/PDAL,radiantbluetechnologies/PDAL,lucadelu/PDAL,Sciumo/PDAL,verma/PDAL,radiantbluetechnologies/PDAL,mtCarto/PDAL,Sciumo/PDAL,verma/PDAL,verma/PDAL,jwomeara/PDAL,lucadelu/PDAL,mpgerlek/PDAL-old