Merge branch 'branch-0.3.1' into 'branch-0.3.1'

Branch 0.3.1

See merge request megasearch/milvus!238

Former-commit-id: 2992e8466fa5ed01910f0ba4d1e1596a34893ee8

cpp/src/server/RequestTask.cpp

@@ -687,7 +687,7 @@ ServerError SearchVectorTask2::ConstructResult(engine::QueryResults& results) {
 
         engine::IDNumber* ids_ptr = (engine::IDNumber*)str_ids.data();
         double* distance_ptr = (double*)str_distances.data();
-        for(size_t k = 0; k < results.size(); k++) {
+        for(size_t k = 0; k < result.size(); k++) {
             auto& pair = result[k];
             ids_ptr[k] = pair.first;
             distance_ptr[k] = pair.second;