message: Fix for bugzilla
  Do not write to internal structure if it keeps same value.
diff: @@ -2649,6 +2649,8 @@ void __kmp_set_num_threads(int new_nth, int gtid) {
  KMP_COUNT_VALUE(OMP_set_numthreads, new_nth);
  thread = __kmp_threads[gtid];
  + if (thread->th.th_current_task->td_icvs.nproc == new_nth)
  + return; // nothing to do
  __kmp_save_internal_controls(thread);
  