py3: use pycompat.fsencode() to convert tempfile name to bytes

Differential Revision: https://phab.mercurial-scm.org/D3612

hgext/infinitepush/__init__.py

@@ -1023,7 +1023,8 b' def storebundle(op, params, bundlefile):'
 
     bundle = None
     try:  # guards bundle
-        bundlepath = "bundle:%s+%s" % (op.repo.root, bundlefile)
+        bundlepath = "bundle:%s+%s" % (op.repo.root,
+                                       pycompat.fsencode(bundlefile))
         bundle = hg.repository(op.repo.ui, bundlepath)
 
         bookmark = params.get('bookmark')