Comment 7 for bug 385197

upstream has solved the issue and debian unstable released an updated package with the fix

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=528212#42

http://bugzilla.pculture.org/show_bug.cgi?id=10695#c11

I' m attaching debian's patch, however note that there's a new version from unstable.