Follow API update of BlackoilOutputWriter

The constructor of class BlackoilOutputWriter gained a new parameter
in commit OPM/opm-autodiff@299b0aa (OPM/opm-autodiff#484).  Honour
new API requirement.

examples/flow_polymer.cpp

@@ -184,10 +184,6 @@ try
     grid.reset(new GridManager(eclipseState->getEclipseGrid(), porv));
     auto &cGrid = *grid->c_grid();
     const PhaseUsage pu = Opm::phaseUsageFromDeck(deck);
-    Opm::BlackoilOutputWriter outputWriter(cGrid,
-                                           param,
-                                           eclipseState,
-                                           pu );
 
     // Rock and fluid init
 
@@ -285,6 +281,10 @@ try
 
     std::vector<double> threshold_pressures = thresholdPressures(parseMode, eclipseState, *grid->c_grid());
 
+    Opm::BlackoilOutputWriter
+        outputWriter(cGrid, param, eclipseState, pu,
+                     new_props->permeability());
+
     SimulatorFullyImplicitBlackoilPolymer<UnstructuredGrid>
         simulator(param,
                   *grid->c_grid(),