OPENJPA-1713: correct the push/pop clean up processing in EntityManagerImpl _plans map.

Submitted By: Albert Lee

git-svn-id: https://svn.apache.org/repos/asf/openjpa/branches/2.0.x@961473 13f79535-47bb-0310-9956-ffa450edef68

openjpa-persistence/src/main/java/org/apache/openjpa/persistence/EntityManagerImpl.java

@@ -176,6 +176,7 @@ public class EntityManagerImpl
         assertNotCloseInvoked();
         _broker.lock();
         try {
+            _plans.remove(_broker.getFetchConfiguration());
             _broker.popFetchConfiguration();
         } finally {
             _broker.unlock();