correct typo in return variable for PySequence_Index()
diff --git a/Objects/abstract.c b/Objects/abstract.c
index d434c7d..bb197a5 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -879,7 +879,7 @@
       err=PyObject_Cmp(item,o,&not_equal) == -1;
       Py_DECREF(item);
       if(err) return -1;
-      if(! not_equal) return n;
+      if(! not_equal) return i;
     }
   return -1;
 }