Bugzilla 42739: fix ant script - cd may have output

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@550805 13f79535-47bb-0310-9956-ffa450edef68

src/script/ant

@@ -108,7 +108,7 @@ if [ -z "$ANT_HOME" -o ! -d "$ANT_HOME" ] ; then
   ANT_HOME=`dirname "$PRG"`/..
 
   # make it fully qualified
-  ANT_HOME=`cd "$ANT_HOME" && pwd`
+  ANT_HOME=`cd "$ANT_HOME" > /dev/null && pwd`
 fi
 
 # For Cygwin, ensure paths are in UNIX format before anything is touched