internal/pkg: destroy temp during deferred cleanup

This avoids missing the cleanup when cure returns an error.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/pkg/pkg.go

@@ -181,7 +181,7 @@ type Kind uint64
 const (
 	// KindHTTPGet is the kind of [Artifact] returned by [NewHTTPGet].
 	KindHTTPGet Kind = iota
-	// KindTar is the kind of artifact returned by [NewTar].
+	// KindTar is the kind of [Artifact] returned by [NewTar].
 	KindTar
 )
 
@@ -829,6 +829,11 @@ func (c *Cache) Cure(a Artifact) (
 			temp:  c.base.Append(dirTemp, ids),
 		}
 		defer func() {
+			if chmodErr, removeErr := removeAll(cc.temp); chmodErr != nil || removeErr != nil {
+				err = errors.Join(err, chmodErr, removeErr)
+				return
+			}
+
 			if err != nil {
 				chmodErr, removeErr := removeAll(cc.work)
 				if chmodErr != nil || removeErr != nil {
@@ -844,11 +849,6 @@ func (c *Cache) Cure(a Artifact) (
 			return
 		}
 		cc.cache = nil
-		if chmodErr, removeErr := removeAll(cc.temp); chmodErr != nil || removeErr != nil {
-			err = errors.Join(err, chmodErr, removeErr)
-			return
-		}
-
 		var fi os.FileInfo
 		if fi, err = os.Lstat(cc.work.String()); err != nil {
 			if errors.Is(err, os.ErrNotExist) {