Changed vals and duplicated_vals to type int.
Changed vals and duplicated_vals to type int.

amandersillinois/landlab,laijingtao/landlab,RondaStrauch/landlab,landlab/landlab,Carralex/landlab,cmshobe/landlab,csherwood-usgs/landlab,ManuSchmi88/landlab,csherwood-usgs/landlab,cmshobe/landlab,landlab/landlab,ManuSchmi88/landlab,RondaStrauch/landlab,landlab/landlab,laijingtao/landlab,ManuSchmi88/landlab,RondaStrauch/landlab,amandersillinois/landlab,Carralex/landlab,Carralex/landlab,cmshobe/landlab