Not swallowing exceptions in some cases when a tx is rolled back by Envers

git-svn-id: https://svn.jboss.org/repos/hibernate/core/trunk@18028 1b8cb986-b30d-0410-93ca-fae66ebed9b2

envers/src/main/java/org/hibernate/envers/synchronization/AuditSync.java

@@ -168,10 +168,17 @@ public class AuditSync implements Synchronization {
 			}
 		} catch (RuntimeException e) {
 			// Rolling back the transaction in case of any exceptions
+			//noinspection finally
+            try {
+                if (session.getTransaction().isActive()) {
     			    session.getTransaction().rollback();
+                }
+            } finally {
+                //noinspection ThrowFromFinallyBlock
                 throw e;
             }
 		}
+    }
 
     public void afterCompletion(int i) {
         manager.remove(transaction);