changed the settingChanged signature to accommodate queued connections

apps/opencs/model/prefs/state.cpp

@@ -368,7 +368,7 @@ CSMPrefs::Category& CSMPrefs::State::operator[] (const std::string& key)
 
 void CSMPrefs::State::update (const Setting& setting)
 {
-    emit (settingChanged (setting));
+    emit (settingChanged (&setting));
 }
 
 CSMPrefs::State& CSMPrefs::State::get()

apps/opencs/model/prefs/state.hpp

@@ -89,7 +89,7 @@ namespace CSMPrefs
 
         signals:
 
-            void settingChanged (const Setting& setting);
+            void settingChanged (const Setting *setting);
     };
 
     // convenience function