Modify passing of vectors

Author: Marcello Di Costanzo

Common/TableProducer/qVectorsTable.cxx

@@ -422,9 +422,9 @@ struct qVectorsTable {
   /// \param normType is the type of normalization to apply to the q-vectors
   void normalizeQVec(std::vector<float>& qVecReNorm,
                      std::vector<float>& qVecImNorm,
-                     std::vector<float> qVecReRaw,
-                     std::vector<float> qVecImRaw,
-                     std::vector<float> qVecAmp,
+                     std::vector<float> const& qVecReRaw,
+                     std::vector<float> const& qVecImRaw,
+                     std::vector<float> const& qVecAmp,
                      MultNorms normType)
   {
     for (std::size_t i = 0; i < kNDetectors; i++) {