[xmlparser-stax] Move getNamespace() to its friends within the file

smack-xmlparser-stax/src/main/java/org/jivesoftware/smack/xml/stax/StaxXmlPullParser.java

@@ -73,6 +73,12 @@ public final class StaxXmlPullParser implements XmlPullParser {
         return namespaceContext.getNamespaceURI(prefix);
     }
 
+    @Override
+    public String getNamespace() {
+        String prefix = getPrefix();
+        return getNamespace(prefix);
+    }
+
     @Override
     public int getDepth() {
         return depth;
@@ -106,12 +112,6 @@ public final class StaxXmlPullParser implements XmlPullParser {
         return xmlStreamReader.getText();
     }
 
-    @Override
-    public String getNamespace() {
-        String prefix = getPrefix();
-        return getNamespace(prefix);
-    }
-
     @Override
     public String getName() {
         QName qname = getQName();