context: fix bug introduced in fb89cd21a7a0, path should be used

mercurial/context.py

@@ -687,7 +687,7 b' class workingctx(changectx):'
             node, flag = self._repo.manifest.find(mnode, orig)
             ff = self._repo.dirstate.flagfunc(lambda x: flag or None)
             try:
-                return ff(orig)
+                return ff(path)
             except OSError:
                 pass