Core/RBAC: Force loadPermissions before checking session permissions if the storage is null (someone created a session but forgot to call to LoadPermissions)

src/server/game/Server/WorldSession.cpp

@@ -1189,5 +1189,8 @@ RBACData* WorldSession::GetRBACData()
 
 bool WorldSession::HasPermission(uint32 permission)
 {
+    if (!_RBACData)
+        LoadPermissions();
+
     return _RBACData->HasPermission(permission);
 }