Merge pull request #2232 from vidartf/patch-1

Do not asssume `Item.obj` in 'skipping' plugin

_pytest/skipping.py

@@ -112,7 +112,8 @@ class MarkEvaluator:
 
     def _getglobals(self):
         d = {'os': os, 'sys': sys, 'config': self.item.config}
-        d.update(self.item.obj.__globals__)
+        if hasattr(self.item, 'obj'):
+            d.update(self.item.obj.__globals__)
         return d
 
     def _istrue(self):