When jencks shuts down an endpoint, it rolls back the last action done on it.. Was causing weird errors to show

up on the broker cause the message had already been commited.  We now handle an RA commit followed by a rollback for
this case (basicaly we ignore the rollback).



git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@658724 13f79535-47bb-0310-9956-ffa450edef68

activemq-core/src/main/java/org/apache/activemq/TransactionContext.java

@@ -153,6 +153,8 @@ public class TransactionContext implements XAResource {
             throw e;
         } catch (Throwable e) {
             throw JMSExceptionSupport.create(e);
+        } finally {
+        	synchornizations = null;
         }
     }
 
@@ -170,6 +172,8 @@ public class TransactionContext implements XAResource {
             throw e;
         } catch (Throwable e) {
             throw JMSExceptionSupport.create(e);
+        } finally {
+        	synchornizations = null;
         }
     }