sh/init.sh: fix the test for cache restoration

This fixes the test for cache restoration since we are no longer caching
the dependency tree.

sh/init.sh.Linux.in

@@ -85,7 +85,7 @@ if grep -Eq "[[:space:]]+xenfs$" /proc/filesystems; then
 	eend $?
 fi
 
-if [ -e "$RC_LIBEXECDIR"/cache/deptree ]; then
+if [ -e "$RC_LIBEXECDIR"/cache/softlevel ]; then
 	cp -p "$RC_LIBEXECDIR"/cache/* "$RC_SVCDIR" 2>/dev/null
 fi