Remove variable duplicate in webgl_pointlights

examples/webgl_lights_pointlights.html

@@ -50,7 +50,7 @@
 			if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
 
 			var camera, scene, renderer,
-			particle1, particle2, particle2,
+			particle1, particle2,
 			light1, light2, light3, light4,
 			object, loader;