[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

gui/siegemanager.lua

@@ -419,7 +419,7 @@ function SiegeEngineList:set_selected_action(action)
     if not selected then
         qerror('No siege engine selected')
     end
-    
+
     local successful = set_siege_engine_action({selected.data}, action)
     if not successful then
         self:refresh_view(true)