Fix exception handling in async_wrapper

utilities/logic/async_wrapper.py

@@ -202,11 +202,11 @@ if __name__ == '__main__':
     except SystemExit:
         # On python2.4, SystemExit is a subclass of Exception.
         # This block makes python2.4 behave the same as python2.5+
-        e = get_exception()
+        e = sys.exc_info()[1]
         sys.exit(e.code)
 
     except Exception:
-        e = get_exception()
+        e = sys.exc_info()[1]
         notice("error: %s"%(e))
         print(json.dumps({
             "failed" : True,