Bugfix: when editing a Curve Guide, and deleting all but one control point,

the path code crashed.

source/blender/blenkernel/intern/effect.c

@@ -338,11 +338,10 @@ ListBase *pdInitEffectors(unsigned int layer)
 				if(ob->type==OB_CURVE) {
 					Curve *cu= ob->data;
 					if(cu->flag & CU_PATH) {
-						pEffectorCache *ec= MEM_callocN(sizeof(pEffectorCache), "effector cache");
-						
 						if(cu->path==NULL || cu->path->data==NULL)
 							makeDispListCurveTypes(ob, 0);
 						if(cu->path && cu->path->data) {
+							pEffectorCache *ec= MEM_callocN(sizeof(pEffectorCache), "effector cache");
 							ec->ob= ob;
 							BLI_addtail(&listb, ec);
 						}