test for null case

git-svn-id: svn+ssh://svn.internal.sanger.ac.uk/repos/svn/pathsoft/artemis/trunk@5792 ee4ac58c-ac51-4696-9907-e4b3aa274f04

uk/ac/sanger/artemis/chado/SqlMapClientWrapper.java

@@ -129,7 +129,8 @@ public class SqlMapClientWrapper
   
   protected void endTransaction() throws SQLException
   { 
-    sqlMap.endTransaction();
+    if(sqlMap != null)
+      sqlMap.endTransaction();
   }
   
   protected void commitTransaction() throws SQLException