Fix invalid capture in ProppantTransport

Author: klevzoff

src/coreComponents/physicsSolvers/fluidFlow/ProppantTransport.cpp

@@ -452,6 +452,7 @@ void ProppantTransport::PostStepUpdate( real64 const & time_n,
     UpdateProppantMobility( subRegion );
   } );
 
+  real64 const maxProppantConcentration = m_maxProppantConcentration;
   forTargetSubRegions( mesh, [&]( localIndex const, ElementSubRegionBase & subRegion )
   {
 
@@ -461,10 +462,10 @@ void ProppantTransport::PostStepUpdate( real64 const & time_n,
 
     forAll< parallelDevicePolicy<> >( subRegion.size(), [=] GEOSX_HOST_DEVICE ( localIndex const ei )
     {
-      if( proppantConc[ei] >= m_maxProppantConcentration || packVf[ei] >= 1.0 )
+      if( proppantConc[ei] >= maxProppantConcentration || packVf[ei] >= 1.0 )
       {
         packVf[ei] = 1.0;
-        proppantConc[ei] = m_maxProppantConcentration;
+        proppantConc[ei] = maxProppantConcentration;
       }
 
     } );