set statusdir only after confirmed directory setup

svn path=/trunk/; revision=31291

build/arguments.sh

@@ -66,7 +66,6 @@ olang="${olang:-en}"
 tree="${tree:-$basedir}"
 readonly tree="${tree:+$(realpath "$tree")}"
 readonly basedir="${basedir:+$(realpath "$basedir")}"
-readonly statusdir="${statusdir:+$(realpath "$statusdir")}"
 readonly target="${target:+$(realpath "$target")}"
 readonly domain="${domain:-www.fsfe.org}"
 readonly command

build/build_main.sh

@@ -30,6 +30,7 @@ if [ -n "$statusdir" ]; then
       "either select a status directory that exists and is writable,\n" \
       "or run the build script without output to a status directory"
 fi
+readonly statusdir="${statusdir:+$(realpath "$statusdir")}"
 
 case "$command" in
   build_into)      build_into ;;