Fix build error
Fix build error

DotSpatial/DotSpatial,CGX-GROUP/DotSpatial,pedwik/DotSpatial,swsglobal/DotSpatial,bdgza/DotSpatial,pedwik/DotSpatial,swsglobal/DotSpatial,swsglobal/DotSpatial,pergerch/DotSpatial,DotSpatial/DotSpatial,pergerch/DotSpatial,bdgza/DotSpatial,pedwik/DotSpatial,bdgza/DotSpatial,donogst/DotSpatial,donogst/DotSpatial,CGX-GROUP/DotSpatial,DotSpatial/DotSpatial,pergerch/DotSpatial,donogst/DotSpatial,CGX-GROUP/DotSpatial