[General] Change signature of BaseEvent::action

components/openmw-mp/Base/BaseEvent.hpp

@@ -87,7 +87,7 @@ namespace mwmp
 
         ESM::Cell cell;
 
-        int action; // 0 - Clear and set in entirety, 1 - Add item, 2 - Remove item, 3 - Request items
+        unsigned char action; // 0 - Clear and set in entirety, 1 - Add item, 2 - Remove item, 3 - Request items
     };
 }