renderer: check for parm_right_cursor before using it.
renderer: check for parm_right_cursor before using it.

rosshinkley/blessed,dbkaplun/blessed,rstr74/blessed,zBMNForks/blessed,eush77/blessed,piranna/blessed,umi/blessed,rstr74/blessed,chjj/blessed,mcanthony/blessed,mcanthony/blessed,dbkaplun/blessed,chjj/blessed,umi/blessed,eush77/blessed,zBMNForks/blessed,piranna/blessed,rosshinkley/blessed