If this variable is not visible, it makes the setenv.sh script sort of useless

Index: bin/catalina.sh
===================================================================
--- bin/catalina.sh	(revision 1103812)
+++ bin/catalina.sh	(working copy)
@@ -116,6 +116,9 @@
 # Ensure that any user defined CLASSPATH variables are not used on startup,
 # but allow them to be specified in setenv.sh, in rare case when it is needed.
 CLASSPATH=
+if [ -z "$CATALINA_BASE" ] ; then
+  CATALINA_BASE="$CATALINA_HOME"
+fi
 
 if [ -r "$CATALINA_BASE"/bin/setenv.sh ]; then
   . "$CATALINA_BASE"/bin/setenv.sh
@@ -163,10 +166,8 @@
   fi
 fi
 
-if [ -z "$CATALINA_BASE" ] ; then
-  CATALINA_BASE="$CATALINA_HOME"
-fi
 
+
 # Add tomcat-juli.jar and bootstrap.jar to classpath
 # tomcat-juli.jar can be over-ridden per instance
 if [ ! -z "$CLASSPATH" ] ; then