kernel/scheduler: fix compile error when TRACE is enabled

Change-Id: I95da18c9faa343fb3a44c627c1227a778701ebbe
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4653
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: Adrien Destugues <[email protected]>

src/system/kernel/scheduler/scheduler.cpp

@@ -118,7 +118,7 @@ enqueue(Thread* thread, bool newOne)
 	bool rescheduleNeeded = threadData->ChooseCoreAndCPU(targetCore, targetCPU);
 
 	TRACE("enqueueing thread %ld with priority %ld on CPU %ld (core %ld)\n",
-		thread->id, threadPriority, targetCPU->fCPUNumber, targetCore->fCoreID);
+		thread->id, threadPriority, targetCPU->ID(), targetCore->ID());
 
 	threadData->Enqueue();