Do not re-initialize stopped wells.

opm/simulators/wells/BlackoilWellModel_impl.hpp

@@ -435,7 +435,7 @@ namespace Opm {
             // This is done only for producers, as injectors will only have a single
             // nonzero phase anyway.
             for (const auto& well : well_container_) {
-                if (well->isProducer()) {
+                if (well->isProducer() && !well->wellIsStopped()) {
                     well->initializeProducerWellState(simulator_, this->wellState(), local_deferredLogger);
                 }
             }