fix ./scripts/env delete

SVN-Revision: 12399

scripts/env

@@ -148,10 +148,11 @@ env_clear() {
 
 env_delete() {
 	local name="${1##*/}"
+	env_init
 	[ -z "$name" ] && usage
-	[ -f "$envdir/.git/refs/heads/$name" ] || error "environment '$name' not found"
+	[ -f "$ENVDIR/.git/refs/heads/$name" ] || error "environment '$name' not found"
 	branch="$(git branch | grep '^\* ' | awk '{print $2}')"
-	[ "$name" = "branch" ] && error "cannot delete the currently selected environment"
+	[ "$name" = "$branch" ] && error "cannot delete the currently selected environment"
 	git branch -D "$name"
 }