gocql/gocql — pull request #215 by fmccann (2014-08-04 21:29:47+00:00)
Title: Alter NewTraceWriter to return a pointer so mutex is not passed by value

Go vet was complaining that traceWriter's mutex was being passed by value. As per @Zariel's suggestion, I modified NewTraceWriter to return a pointer rather than a struct by value.