From 419bae1f0917875705634d5eaf89c0e0aa31ccbd Mon Sep 17 00:00:00 2001
From: John Chilton <jmchilton@gmail.com>
Date: Thu, 18 Apr 2019 14:34:25 -0400
Subject: [PATCH] Don't calculate real path in tool action code if unused.

---
 lib/galaxy/tools/wrappers.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/galaxy/tools/wrappers.py b/lib/galaxy/tools/wrappers.py
index 474a54b60f5..8e23cb72585 100644
--- a/lib/galaxy/tools/wrappers.py
+++ b/lib/galaxy/tools/wrappers.py
@@ -322,7 +322,7 @@ class HasDatasets(object):
 
     def _dataset_wrapper(self, dataset, dataset_paths, **kwargs):
         wrapper_kwds = kwargs.copy()
-        if dataset:
+        if dataset and dataset_paths:
             real_path = dataset.file_name
             if real_path in dataset_paths:
                 wrapper_kwds["dataset_path"] = dataset_paths[real_path]