catch exceptions as const

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ic4d935b6d33e49dfb5606239b20db10514a95c1a
diff --git a/settings_manager.mako.hpp b/settings_manager.mako.hpp
index d22fd2d..36cb486 100644
--- a/settings_manager.mako.hpp
+++ b/settings_manager.mako.hpp
@@ -318,7 +318,7 @@
                     initSetting${index}();
                 }
             }
-            catch (cereal::Exception& e)
+            catch (const cereal::Exception& e)
             {
                 log<level::ERR>(e.what());
                 fs::remove(path);