Cleanup usage of other plugins' properties

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@112768 13f79535-47bb-0310-9956-ffa450edef68

jdiff/plugin.jelly

@@ -6,9 +6,7 @@
   <!-- P R O J E C T  D O C U M E N T A T I O N                           -->
   <!-- ================================================================== -->
       
-  <goal
-    name="jdiff"
-    prereqs="xdoc:init"
+  <goal name="jdiff" prereqs="xdoc:init"
     description="generate an api difference report between versions">
 
     <property name="maven.jdiff.dir" value="${maven.build.dir}/jdiff"/>
@@ -16,6 +14,9 @@
 
     <j:set var="docsDest"
       value="${pom.getPluginContext('maven-xdoc-plugin').getVariable('maven.docs.dest')}"/>
+    <j:set var="javadocDestdir"
+      value="${pom.getPluginContext('maven-javadoc-plugin').getVariable('maven.javadoc.destdir')}"/>
+      
     <property name="maven.jdiff.changes.dir" value="${docsDest}/jdiff"/>    
     <mkdir dir="${maven.jdiff.changes.dir}"/>
             
@@ -112,7 +113,7 @@
         <param name="-stats"/>
         <param name="-oldapi" value="${maven.jdiff.old.tag}"/>
         <param name="-newapi" value="${maven.jdiff.new.tag}"/>
-        <param name="-javadocnew" value="${maven.javadoc.destdir}/"/>
+        <param name="-javadocnew" value="${javadocDestdir}/"/>
       </doclet>      
 
     </javadoc>