In itimer, call hpcrun_finalize_metrics for the default kind, so that there is a pointer to the timer description string.
In itimer, call hpcrun_finalize_metrics for the default kind, so
that there is a pointer to the timer description string.

HPCToolkit/hpctoolkit,HPCToolkit/hpctoolkit,HPCToolkit/hpctoolkit,HPCToolkit/hpctoolkit,HPCToolkit/hpctoolkit,HPCToolkit/hpctoolkit