Remove temporary allocations when preprocessing a samples buffer (#14208)

* Remove allocations when smoothing samples buffer

The number of dims per sample is always 1, ie. we are training and
predicting only individual dimensions.

* Do not try to stop anomaly detection threads twice.

A separate function call has been added to stop anomaly detection threads.
This commit removes the left over function calls that were made
internally when a host was being created/destroyed.

* Move samples instead of copying.

1 files changed, 1 insertions, 1 deletions

diff --git a/ml/SamplesBuffer.cc b/ml/SamplesBuffer.cc
index 6278e27891..359b60c232 100644
--- a/ml/SamplesBuffer.cc
+++ b/ml/SamplesBuffer.cc
@@ -139,7 +139,7 @@ void SamplesBuffer::preprocess(std::vector<DSample> &Samples) {
         const Sample PS = getPreprocessedSample(Idx);
         PS.initDSample(DS);
 
-        Samples.push_back(DS);
+        Samples.push_back(std::move(DS));
     }
 }