# HG changeset patch
# User Martin von Zweigbergk <martinvonz@google.com>
# Date 2021-02-10 17:49:50
# Node ID cd91543431604b0fcaa601a3aa8b3c862f0d7c41
# Parent  beaa233e81f7d05560b0ba454f1315fab722de26

softstrip: fix a reference to an undefined variable

`backupfile` wasn't defined if no backup was requested. Let's set it
to `None` by default, which matches what regular `repair.strip()`
does.

Differential Revision: https://phab.mercurial-scm.org/D9985

diff --git a/mercurial/repair.py b/mercurial/repair.py
--- a/mercurial/repair.py
+++ b/mercurial/repair.py
@@ -308,6 +308,7 @@ def softstrip(ui, repo, nodelist, backup
     if not tostrip:
         return None
 
+    backupfile = None
     if backup:
         node = tostrip[0]
         backupfile = _createstripbackup(repo, tostrip, node, topic)