Fix copy-paste failure from linux test code

1b7c801d · Silas Boyd-Wickizer · d7a94965 · 1b7c801d
--- a/kernel/sched.cc
+++ b/kernel/sched.cc
@@ -168,7 +168,7 @@ steal(void)
  pushcli();

  for (int nonexec = 0; nonexec < (steal_nonexec ? 2 : 1); nonexec++) { 
-    for (int i = 1; i < ncpu; i++) {
+    for (int i = 0; i < NCPU; i++) {
      steal = schedule_[i].steal(nonexec);
      if (steal != nullptr) {
        acquire(&steal->lock);