Azure Monitor Logs: Avoid warning when the response is empty (#59211)

pkg/tsdb/azuremonitor/loganalytics/azure-log-analytics-datasource_test.go

@@ -11,6 +11,7 @@ import (
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/grafana/grafana-plugin-sdk-go/backend"
+	"github.com/grafana/grafana-plugin-sdk-go/data"
 	"github.com/stretchr/testify/require"
 
 	"github.com/grafana/grafana/pkg/infra/log"
@@ -242,3 +243,11 @@ func Test_executeQueryErrorWithDifferentLogAnalyticsCreds(t *testing.T) {
 		t.Error("expecting the error to inform of bad credentials")
 	}
 }
+
+func Test_setAdditionalFrameMeta(t *testing.T) {
+	t.Run("it should not error with an empty response", func(t *testing.T) {
+		frame := data.NewFrame("test")
+		err := setAdditionalFrameMeta(frame, "", "", "")
+		require.NoError(t, err)
+	})
+}