streamclone: close large revlog files explicitly in generatev1()

mercurial/streamclone.py

@@ -221,12 +221,11 b' def generatev1(repo):'
                 repo.ui.debug('sending %s (%d bytes)\n' % (name, size))
             # partially encode name over the wire for backwards compat
             yield '%s\0%d\n' % (store.encodedir(name), size)
+            with svfs(name, 'rb', auditpath=False) as fp:
             if size <= 65536:
-                with svfs(name, 'rb', auditpath=False) as fp:
                     yield fp.read(size)
             else:
-                data = svfs(name, auditpath=False)
-                for chunk in util.filechunkiter(data, limit=size):
+                    for chunk in util.filechunkiter(fp, limit=size):
                     yield chunk
 
     return len(entries), total_bytes, emitrevlogdata()