Always pass non-null fetch conf to StoreManager.

git-svn-id: https://svn.apache.org/repos/asf/incubator/openjpa/trunk@427206 13f79535-47bb-0310-9956-ffa450edef68

openjpa-kernel/src/main/java/org/apache/openjpa/kernel/StateManagerImpl.java

@@ -2718,6 +2718,8 @@ public class StateManagerImpl
             // if any fields given, load them
             int len = (fields == null) ? 0 : fields.length();
             if (len > 0) {
+                if (fetch == null)
+                    fetch = _broker.getFetchConfiguration();
                 if (!_broker.getStoreManager().load(this, fields, fetch,
                     lockLevel, sdata)) {
                     throw new ObjectNotFoundException(_loc.get("del-instance",