Oops, now kira_draw needs to ensure we really have something to draw!

src/kira_parti.cc

@@ -431,13 +431,17 @@ struct specklist *get_parti( struct stuff *st, double realtime )
 void kira_draw( struct stuff *st, struct specklist *slhead, Matrix *Tc2w, float radperpix )
 {
     struct worldstuff *ww = (struct worldstuff *)st->dyndatadata;
+
+    if(ww == NULL)
+	return;
+
     struct specklist *sl;
+    float halftickscale = 0.5 * ww->tickscale;
 
     static Point zero = {0,0,0};
     Point fwdvec = {0,0,-radperpix};	// scaled by pixels-per-radian
     Point eyepoint, fwd, unitfwd;
     float fwdd;
-    float halftickscale = 0.5 * ww->tickscale;
 
     vtfmpoint( &eyepoint, &zero, Tc2w );
     vtfmvector( &fwd, &fwdvec, Tc2w );