potential fix for lifetime of cache data take two

qdp_project/src/benchmark/pipelines/MAX_scan_filter_pipe.h

@@ -330,7 +330,7 @@ public:
                 // after the copy task has finished we obtain the pointer to the cached
                 // copy of data_b which is then used from now on
 
-                base_t* data_ptr = reinterpret_cast<base_t*>(data->GetDataLocation());
+                data_ptr = reinterpret_cast<base_t*>(data->GetDataLocation());
 
                 // nullptr is still a legal return value for CacheData::GetLocation()
                 // even after waiting, so this must be checked