tweak debug message

Author: dgrove-oss

src/event/workqueue.c

@@ -228,12 +228,12 @@ _dispatch_workq_monitor_thread_pool(void *context DISPATCH_UNUSED)
 	bool work_available = _dispatch_workq_root_queue_has_work(dq);
 	if (work_available) {
 		_dispatch_workq_count_runnable_workers(mgr);
+		int32_t count = _dispatch_pthread_root_queue_thread_pool_size(dq);
 
-		_dispatch_debug("workq: %s is non-empty and has %d runnable workers\n",
-				dq->dq_label, mgr->runnable_workers);
+		_dispatch_debug("workq: %s is non-empty with pool count %d (%d runnable)",
+				dq->dq_label, count,  mgr->runnable_workers);
 
 		if (mgr->runnable_workers < mgr->target_runnable_workers) {
-			int32_t count = _dispatch_pthread_root_queue_thread_pool_size(dq);
 			int32_t allowed_over = WORKQ_OVERSUBSCRIBE_FACTOR * mgr->target_runnable_workers;
 			allowed_over = MIN(allowed_over, WORKQ_MAX_TRACKED_WORKERS - mgr->target_runnable_workers);
 			if (count + allowed_over > 0) {