bookmark: fix invalidation of localrepo._bookmarkcurrent

mercurial/localrepo.py

@@ -763,7 +763,7 b' class localrepository(repo.repository):'
         self._branchcachetip = None
 
     def invalidate(self):
-        for a in ("changelog", "manifest", "_bookmarks", "_bookmarkscurrent"):
+        for a in ("changelog", "manifest", "_bookmarks", "_bookmarkcurrent"):
             if a in self.__dict__:
                 delattr(self, a)
         self.invalidatecaches()