fix bug I introduced

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@671686 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/types/resources/ContentTransformingResource.java

@@ -237,7 +237,7 @@ public abstract class ContentTransformingResource extends Resource {
      * @return whether this Resource is a FileProvider.
      */
     public boolean isFilesystemOnly() {
-        return getResource().isFilesystemOnly();
+        return false;
     }
 
     /**