Fixed a typo and removed a useless backslash
diff --git a/jinja2/sandbox.py b/jinja2/sandbox.py
index 55817be..0c9f573 100644
--- a/jinja2/sandbox.py
+++ b/jinja2/sandbox.py
@@ -201,7 +201,7 @@
         True.  Override this method to alter the behavior, but this won't
         affect the `unsafe` decorator from this module.
         """
-        return not (getattr(obj, 'unsafe_callable', False) or \
+        return not (getattr(obj, 'unsafe_callable', False) or
                     getattr(obj, 'alters_data', False))
 
     def getitem(self, obj, argument):