Fixed|Renderer: BspLeaf::MissingClusterError drawing a particle model

Particle models are drawn from the interpolated origin, which, may
lie in a degenerate BSP leaf even though the actual origin is within
the map. Consequently the BspLeaf given to R_CollectAffectingLights()
may be degenerate.

doomsday/client/src/render/vlight.cpp

@@ -320,7 +320,7 @@ uint R_CollectAffectingLights(collectaffectinglights_params_t const *p)
     lightWithWorldLight(p->ambientColor, p->starkLight, listIdx);
 
     // Add extra light by interpreting nearby sources.
-    if(p->bspLeaf)
+    if(p->bspLeaf && p->bspLeaf->hasCluster())
     {
         lightWithLumobjs(p->origin, *p->bspLeaf, listIdx);