more to clean up

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@276839 13f79535-47bb-0310-9956-ffa450edef68

src/etc/testcases/taskdefs/checksum.xml

@@ -8,7 +8,9 @@
     <delete file="../asf-logo.gif.md5sum" />
     <delete file="../asf-logo.gif.SVF" />
     <delete file="../asf-logo.gif.svf" />
-	<delete>
+    <delete file="../asf-logo.gif.pattern" />
+    <delete file="../asf-logo.gif.PATTERN" />
+    <delete>
       <fileset dir="checksum">
         <include name="**/*.MD5"/>
       </fileset>