DpSim distr: wavelength via scan

Sim/Simulation/DepthprobeSimulation.cpp

@@ -74,7 +74,7 @@ void DepthprobeSimulation::initDistributionHandler()
             break;
         case ParameterDistribution::BeamWavelength:
             distributionHandler().defineCallbackForDistribution(
-                &distribution, [&](double d) { m_beam->setWavelength(d); });
+                &distribution, [&](double d) { m_scan->setWavelength(d); });
             break;
         default:
             ASSERT(false);