Hold the secrets row to the have read's error, as the loop fix's Env.Held returns it (issue 1126)

internal/selfcompose/selfcompose_test.go

@@ -546,11 +546,11 @@ func TestTheNodeComposesItsWantsFromTheBus(t *testing.T) {
 		{"a box at another entry", delivery.Seals{"grafana.ini#secrets.secret-key": rotatedBox}, "box-again"},
 	} {
 		secretsEnv := coreEnv
-		secretsEnv.Held = func(module string) (delivery.Seals, []string) {
+		secretsEnv.Held = func(module string) (delivery.Seals, []string, error) {
 			if module == "grafana" {
-				return row.held, nil
+				return row.held, nil, nil
 			}
-			return nil, nil
+			return nil, nil, nil
 		}
 		got := delivery.SealsIn(New(secretsEnv).keepRunning(ini("box-again", "box-other"), nil))
 		if got["grafana.ini#secrets.postgres-database"] != row.want || got["grafana.ini#secrets.secret-key"] != "box-other" {