Add unit test for RootHubInterface#getSetting

Author: kayahr

src/test/java/org/usb4java/javax/RootHubInterfaceTest.java

@@ -129,6 +129,15 @@ public void testGetActiveSetting()
         assertSame(this.iface, this.iface.getActiveSetting());
     }
 
+    /**
+     * Tests the {@link RootHubInterface#getSetting(byte)} method.
+     */
+    @Test
+    public void testGetSetting()
+    {
+        assertSame(this.iface, this.iface.getSetting((byte) 0));
+    }
+    
     /**
      * Tests the {@link RootHubInterface#containsSetting(byte)} method.
      */