remove two mysterious crashes (although I don't know why it was broken to begin with)

git-svn-id: svn://svn.icculus.org/netradiant/trunk@223 61c419a2-8eb2-4b30-bcec-8cead039b335

radiant/entity.cpp

@@ -195,7 +195,8 @@ public:
   }
   void post(const scene::Path& path, scene::Instance& instance) const
   {
-    if(Instance_getSelectable(instance)->isSelected())
+	Selectable *selectable = Instance_getSelectable(instance);
+    if(selectable && selectable->isSelected())
     { 
 	  Entity* entity = Node_getEntity(path.top());
 	  if(entity == 0 && Node_isPrimitive(path.top()))

tools/quake3/q3map2/surface.c

@@ -181,6 +181,7 @@ mapDrawSurface_t *MakeCelSurface( mapDrawSurface_t *src, shaderInfo_t *si )
 	/* do some fixups for celshading */
 	ds->planar = qfalse;
 	ds->planeNum = -1;
+	ds->celShader = NULL; /* don't cel shade cels :P */
 	
 	/* return the surface */
 	return ds;