Fixed an issue with where one couldn't have several Shadow renderers in the same scene

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@10710 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/core/com/jme3/shadow/AbstractShadowRenderer.java

@@ -448,7 +448,7 @@ public abstract class AbstractShadowRenderer implements SceneProcessor, Savable
             renderManager.setForcedTechnique(postTechniqueName);
 
             //rendering the post shadow pass
-            viewPort.getQueue().renderShadowQueue(lightReceivers, renderManager, cam, true);
+            viewPort.getQueue().renderShadowQueue(lightReceivers, renderManager, cam, flushQueues);
             if (flushQueues) {
                 sceneReceivers.clear();
             }