Fix an forgotten change of type in class Area and a checkstyle error in class FObj

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@1064159 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/fop/area/Area.java

      * @param traitCode the trait key
      * @param prop the value of the trait
      */
-    public void addTrait(Object traitCode, Object prop) {
+    public void addTrait(Integer traitCode, Object prop) {
         if (props == null) {
             props = new java.util.HashMap<Integer, Object>(20);
         }
-        props.put((Integer)traitCode, prop);
+        props.put(traitCode, prop);
     }
 
     /**

src/java/org/apache/fop/fo/FObj.java

     private static final PropertyMaker[] PROPERTY_LIST_TABLE
                             = FOPropertyMapping.getGenericMappings();
 
-    /**
-     * pointer to the descendant subtree
-     */
+    /** pointer to the descendant subtree */
     protected FONode firstChild;
+
+    /** pointer to the end of the descendant subtree */
     protected FONode lastChild;
 
     /** The list of extension attachments, null if none */

src/java/org/apache/fop/layoutmgr/TraitSetter.java

     private static void addBorderTrait(Area area,
                                        CommonBorderPaddingBackground bpProps,
                                        boolean bDiscard, int iSide, int mode,
-                                       Object oTrait) {
+                                       Integer trait) {
         int iBP = bpProps.getBorderWidth(iSide, bDiscard);
         if (iBP > 0) {
-            area.addTrait(oTrait,
+            area.addTrait(trait,
                     new BorderProps(bpProps.getBorderStyle(iSide),
                             iBP, bpProps.getBorderColor(iSide),
                             mode));