[Client] Don't crash when dying while inside a container

apps/openmw/mwmp/WorldController.cpp

@@ -70,6 +70,9 @@ void mwmp::WorldController::closeContainer(const MWWorld::Ptr &container)
 {
     mwmp::Main::get().getLocalPlayer()->clearCurrentContainer();
 
+    // If the player died while in a container, the container's Ptr could be invalid now
+    if (!container.isEmpty())
+    {
         LOG_MESSAGE_SIMPLE(Log::LOG_VERBOSE, "Container \"%s\" (%d) is closed.",
             container.getCellRef().getRefId().c_str(),
             container.getCellRef().getRefNum().mIndex);
@@ -80,5 +83,7 @@ void mwmp::WorldController::closeContainer(const MWWorld::Ptr &container)
             LOG_APPEND(Log::LOG_VERBOSE, " - Item. Refid: \"%s\" Count: %d",
                 iter->getCellRef().getRefId().c_str(), iter->getRefData().getCount());
         }
+    }
+
     mwmp::Main::get().getLocalPlayer()->updateInventory();
 }