[PATCH remotefilelog-ext] fileserverclient: make iterbatch() case work with new store

[Martin von Zweigbergk]

# HG changeset patch
# User Martin von Zweigbergk <martinvonz at google.com>
# Date 1463636360 25200
#      Wed May 18 22:39:20 2016 -0700
# Node ID e1d21752505c55a83509685159d6ed8d4b50d6ae
# Parent  3df8af03df789dee35c6026fce5ec1a59b43cca0
fileserverclient: make iterbatch() case work with new store

The iterbatch() handling added in 08ca5042a8a1 (fileserverclient: use
new iterbatch() method, 2016-03-22) was broken by 06d5f64ccb7c (store:
change fileserviceclient to write via new store, 2016-04-04). Fix it
by copying the pattern introduced elsewhere in that change.

diff -r 3df8af03df78 -r e1d21752505c remotefilelog/fileserverclient.py
--- a/remotefilelog/fileserverclient.py	Mon Jan 04 21:32:21 2016 -0800
+++ b/remotefilelog/fileserverclient.py	Wed May 18 22:39:20 2016 -0700
@@ -146,7 +146,9 @@
             b.getfile(file_, node)
         b.submit()
         for m, r in itertools.izip(missed, b.results()):
-            receivemissing(io.BytesIO('%d\n%s' % (len(r), r)), m)
+            file_ = idmap[m]
+            node = m[-40:]
+            receivemissing(io.BytesIO('%d\n%s' % (len(r), r)), file_, node)
             progresstick()
         return
     while missed: