minor const-correctness fix

Author: ferencek

SimTracker/Common/interface/SiPixelChargeReweightingAlgorithm.h

@@ -823,7 +823,7 @@ bool SiPixelChargeReweightingAlgorithm::lateSignalReweight(const PixelGeomDetUni
   }
 
   // need to store the digi out of the 21x13 box.
-  for (auto& i : theDigiSignal) {
+  for (const auto& i : theDigiSignal) {
     // check if in the 21x13 box
     int chanDigi = i.first;
     std::pair<int, int> ip = PixelDigi::channelToPixel(chanDigi);
@@ -1039,7 +1039,7 @@ bool SiPixelChargeReweightingAlgorithm::lateSignalReweight(const PixelGeomDetUni
   }
 
   // need to store the digi out of the 21x13 box.
-  for (auto& i : theDigiSignal) {
+  for (const auto& i : theDigiSignal) {
     // check if in the 21x13 box
     int chanDigi = i.first;
     std::pair<int, int> ip = PixelDigi::channelToPixel(chanDigi);

SimTracker/SiPixelDigitizer/plugins/PreMixingSiPixelWorker.cc

@@ -266,7 +266,7 @@ void PreMixingSiPixelWorker::addPileups(PileUpEventPrincipal const& pep, edm::Ev
           jtest = SiHitExtraStorage_.find(detID);
           OneExtraInfoMap LocalSimHitExtraMap = jtest->second;
           std::vector<PixelSimHitExtraInfo> TempSimExtra;
-          for (auto& iLocal : LocalSimHitExtraMap) {
+          for (const auto& iLocal : LocalSimHitExtraMap) {
             TempSimExtra.push_back(iLocal.second);
           }
 
@@ -285,7 +285,7 @@ void PreMixingSiPixelWorker::addPileups(PileUpEventPrincipal const& pep, edm::Ev
           jtest = SiHitExtraLiteStorage_.find(detID);
           OneExtraInfoLiteMap LocalSimHitExtraMap = jtest->second;
           std::vector<PixelSimHitExtraInfoLite> TempSimExtra;
-          for (auto& iLocal : LocalSimHitExtraMap) {
+          for (const auto& iLocal : LocalSimHitExtraMap) {
             TempSimExtra.push_back(iLocal.second);
           }