v2api/reverse: fix two fd leaks

internal/fusefrontend_reverse/node_helpers.go

@@ -104,6 +104,7 @@ func (n *Node) lookupLongnameName(ctx context.Context, nameFile string, out *fus
 		errno = fs.ToErrno(err)
 		return
 	}
+	defer syscall.Close(fd)
 	diriv := pathiv.Derive(n.Path(), pathiv.PurposeDirIV)
 	rn := n.rootNode()
 	pName, cFullname, errno := rn.findLongnameParent(fd, diriv, nameFile)

internal/fusefrontend_reverse/rpath.go

@@ -56,6 +56,7 @@ func (rfs *RootNode) rDecryptName(cName string, dirIV []byte, pDir string) (pNam
 		if err != nil {
 			return "", err
 		}
+		defer syscall.Close(fd)
 		var errno syscall.Errno
 		pName, _, errno = rfs.findLongnameParent(fd, dirIV, cName)
 		if errno != 0 {