[kwin/oxygen] Reorder variables in Oxygen::Factory

The _config is needed before the _helper gets created otherwise it
can end in a crash.

clients/oxygen/oxygenfactory.h

@@ -117,6 +117,9 @@ namespace Oxygen
         //! initialization flag
         bool _initialized;
 
+        //! config object
+        KSharedConfigPtr _config;
+
         //! helper
         DecoHelper _helper;
 
@@ -129,9 +132,6 @@ namespace Oxygen
         //! list of exceptiosn
         QList<ConfigurationPtr> _exceptions;
 
-        //! config object
-        KSharedConfigPtr _config;
-
     };
 
 }