From fb7706d4c7141b02dd14eb8a4ed2a5ec9bc88aa2 Mon Sep 17 00:00:00 2001
From: Ralf Schmitt <ralf@systemexit.de>
Date: Wed, 4 Jan 2012 12:42:23 +0100
Subject: [PATCH] make sure calling undo a second time doesn't change sys.path

---
 _pytest/monkeypatch.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/_pytest/monkeypatch.py b/_pytest/monkeypatch.py
index 84cace731..fe54e63af 100644
--- a/_pytest/monkeypatch.py
+++ b/_pytest/monkeypatch.py
@@ -104,3 +104,4 @@ class monkeypatch:
         self._setitem[:] = []
         if hasattr(self, '_savesyspath'):
             sys.path[:] = self._savesyspath
+            del self._savesyspath