Add missing bug fix to whats-new
Add missing bug fix to whats-new

jhamman/xarray,drewokane/xray,shoyer/xray,kjordahl/xray,jcmgray/xarray,hetland/xray,jhamman/xarray,rabernat/xray,jhamman/xarray,markelg/xray,jhamman/xray,cpaulik/xray,xray/xray,cpaulik/xray,pydata/xarray,clarkfitzg/xray,shoyer/xarray,pydata/xarray,chunweiyuan/xarray,clarkfitzg/xray,rabernat/xray,petercable/xray,kjordahl/xray,NicWayand/xray,hetland/xray,pydata/xarray,markelg/xray,markelg/xray,shoyer/xarray