Add missing header files

opm/simulators/flow/SimulatorFullyImplicitBlackoil.hpp

@@ -218,14 +218,16 @@ public:
             // For now, we require that SLAVES and GRUPMAST are defined at the first
             //  schedule step, so it is enough to check the first step. See the
             //  keyword handlers in opm-common for more information.
-            auto master_mode = this->schedule()[0].rescoup().masterMode();
-            if (master_mode) {
-                this->reservoirCouplingMaster_ =
-                    std::make_unique<ReservoirCouplingMaster>(
-                        FlowGenericVanguard::comm(),
-                        this->schedule()
-                    );
-                this->reservoirCouplingMaster_->spawnSlaveProcesses(argc, argv);
+            if (!this->schedule()[0].rescoup.empty()) {
+                auto master_mode = this->schedule()[0].rescoup().masterMode();
+                if (master_mode) {
+                    this->reservoirCouplingMaster_ =
+                        std::make_unique<ReservoirCouplingMaster>(
+                            FlowGenericVanguard::comm(),
+                            this->schedule()
+                        );
+                    this->reservoirCouplingMaster_->spawnSlaveProcesses(argc, argv);
+                }
             }
         }
 #endif