Test that active_link fields are correct size.
Test that active_link fields are correct size.

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