[LidarPlugin][fix] Catch exception by reference

ApplicationComponents/SaveAndLoadLidarState/lqLoadLidarStateReaction.cxx

@@ -67,7 +67,7 @@ void lqLoadLidarStateReaction::LoadLidarState(vtkSMProxy * lidarCurrentProxy)
   {
     file >> contents;
   }
-  catch(std::exception e)
+  catch(std::exception& e)
   {
     QMessageBox::warning(nullptr, tr(""), tr("Json file not valid") );
     return;
@@ -79,7 +79,7 @@ void lqLoadLidarStateReaction::LoadLidarState(vtkSMProxy * lidarCurrentProxy)
   {
     ParseJsonContent(contents, "",propertyInfo);
   }
-  catch(std::exception e)
+  catch(std::exception& e)
   {
     QMessageBox::warning(nullptr, tr(""), tr("Error when parsing json information") );
     return;

LidarPlugin/Plugin/LidarModule/IO/Lidar/Common/PacketReceiver.cxx

@@ -86,7 +86,7 @@ PacketReceiver::PacketReceiver(int port,
 
           vtkGenericWarningMacro("Listening on " << listen_address.to_string() << " local IP, with multicast group " << multicast_address.to_string() << " ONLY.");
         }
-        catch(std::exception e)
+        catch(std::exception& e)
         {
           vtkGenericWarningMacro("Error while setting listening address for multicast, please correct it or leave empty to listen on all local ip addresses");
         }
@@ -132,7 +132,7 @@ PacketReceiver::PacketReceiver(int port,
         // Bind the socket to listen address (specific or INADDR_ANY) and to the defined port
         this->Socket.bind(boost::asio::ip::udp::endpoint(listen_address, port));
       }
-      catch(std::exception e)
+      catch(std::exception& e)
       {
         vtkGenericWarningMacro("Error while setting listening address, please correct it or leave empty to ignore");
       }