Failing build on opensolaris

The build is failing on

../../src/comm.cc: In member function `void
ClientInfo::setWriteLimiter(int, double, double)':
../../src/comm.cc:2156: warning: right-hand operand of comma has no effect

That line is
        cbdataReference(quotaQueue);

where in cbdata.h
#define cbdataReference(var) (cbdataInternalLock(var), var)

Fixing this would seem simple, but it probably breaks encapsulation
(that "Internal" soeems suspicious to me).
Anyone willing to take on this, or to share a hint on how to do it?

-- 
    /kinkie