Fix invalid device unique_ptr cast

src/device/device_default.cpp

@@ -254,10 +254,10 @@ namespace hw {
                 default_core_device->set_name("default_core_device");
 
             }
-            registry.insert(std::make_pair("default",default_core_device));
+            registry.insert(std::make_pair("default", std::unique_ptr<device>(default_core_device)));
         }
 
 
     }
 
-}
+}

src/device/device_ledger.cpp

@@ -2054,7 +2054,7 @@ namespace hw {
         legder_device = new device_ledger();
         legder_device->set_name("Ledger");
       }
-      registry.insert(std::make_pair("Ledger", legder_device));
+      registry.insert(std::make_pair("Ledger", std::unique_ptr<device>(legder_device)));
     }
   
   #else //WITH_DEVICE_LEDGER