Fixed unreferenced variable in bokeh PointPlot
Fixed unreferenced variable in bokeh PointPlot

vascotenner/holoviews,basnijholt/holoviews,basnijholt/holoviews,vascotenner/holoviews,vascotenner/holoviews,ioam/holoviews,ioam/holoviews,basnijholt/holoviews,ioam/holoviews