more descriptive name for starting dir

releng/releng_build_isojigdo

@@ -2,7 +2,8 @@
 
 set -e
 
-START_DIR=`pwd`
+START_DIR_DONT_CHANGE=`pwd`
+
 # required config items
 XOR=""
 DIR=""
@@ -149,7 +150,7 @@ esac
 if [ ${CLEAN} -eq 1 ]; then
  # safety net, just in case -> we want to be in the starting
  # directory before removing whatever self-generated stuff
- cd "${START_DIR}" || exit 1
+ cd "${START_DIR_DONT_CHANGE}" || exit 1
  rm -f ${RES}
  printf "$0: removed %s\n" ${RES}
 else