Bug 1434968 - Clear mUniqueStacks, mSavedStreamedSamples and mSavedStreamedMarkers when the profiler is stopped. r=njn

MozReview-Commit-ID: L1Lk0sj2Bub

--HG--
extra : rebase_source : 842b53979122b20687b64278c2be6e706c92991e

tools/profiler/core/ThreadInfo.cpp

@@ -68,6 +68,9 @@ void
 ThreadInfo::StopProfiling()
 {
   mResponsiveness.reset();
+  mUniqueStacks.reset();
+  mSavedStreamedSamples = nullptr;
+  mSavedStreamedMarkers = nullptr;
   mIsBeingProfiled = false;
 }