[turbofan] Fix TickEvents cctest typo.

Review-Url: https://codereview.chromium.org/2225033004
Cr-Commit-Position: refs/heads/master@{#38488}

test/cctest/test-cpu-profiler.cc

@@ -242,7 +242,7 @@ TEST(TickEvents) {
   EnqueueTickSampleEvent(
       processor,
       frame2_code->instruction_start() + frame2_code->ExecutableSize() / 2,
-      frame1_code->instruction_start() + frame2_code->ExecutableSize() / 2);
+      frame1_code->instruction_start() + frame1_code->ExecutableSize() / 2);
   EnqueueTickSampleEvent(processor, frame3_code->instruction_end() - 1,
                          frame2_code->instruction_end() - 1,
                          frame1_code->instruction_end() - 1);