Mionr: Use static method throgh class.

src/org/jitsi/impl/configuration/ConfigurationServiceImpl.java

@@ -1559,8 +1559,7 @@ private void loadDefaultProperties(String fileName)
         {
             Properties fileProps = new Properties();
 
-            fileProps.load(ClassLoader.getSystemClassLoader()
-                .getSystemResourceAsStream(fileName));
+            fileProps.load(ClassLoader.getSystemResourceAsStream(fileName));
 
             // now get those properties and place them into the mutable and
             // immutable properties maps.