Duplicate call to connection_mark_for_close

I get lots (about twice an hour) of these in my logfile: [Warning] Bug: Duplicate call to connection_mark_for_close at connection.c:1175 (first at connection_edge.c:1618)

tor version: 0.2.1.27

my torrc: SocksPort 9050 SocksListenAddress 127.0.0.1 AutomapHostsOnResolve 1 TransPort 9040 DNSPort 53 Log notice syslog ControlPort 9051 HashedControlPassword xxxxxxxxxxxxxxxx DataDirectory /var/lib/tor/.tor User toranon

Trac:
Username: Kiyoo

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