Correct checkstyle issue - import incorrect order

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@1716904 13f79535-47bb-0310-9956-ffa450edef68

test/java/org/apache/fop/layoutengine/ElementListCheck.java

@@ -28,10 +28,10 @@ import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;
 import org.w3c.dom.Text;
 
-import org.apache.fop.layoutmgr.ListElement;
 import org.apache.fop.layoutmgr.KnuthBox;
 import org.apache.fop.layoutmgr.KnuthGlue;
 import org.apache.fop.layoutmgr.KnuthPenalty;
+import org.apache.fop.layoutmgr.ListElement;
 
 /**
  * Check implementation that checks a Knuth element list.