Fixed errcheck issues in server/channels/app/product_notices_test.go (#29194)

server/.golangci.yml

@@ -136,7 +136,6 @@ issues:
         channels/app/post_metadata.go|\
         channels/app/post_persistent_notification_test.go|\
         channels/app/post_test.go|\
-        channels/app/product_notices_test.go|\
         channels/app/security_update_check.go|\
         channels/app/server.go|\
         channels/app/server_test.go|\

server/channels/app/product_notices_test.go

@@ -633,9 +633,11 @@ func TestNoticeFetch(t *testing.T) {
 	require.NoError(t, err)
 	server1 := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if strings.HasSuffix(r.URL.Path, "notices.json") {
-			w.Write(noticesBytes)
+			_, err = w.Write(noticesBytes)
+			require.NoError(t, err)
 		} else {
-			w.Write(noticesBytes2)
+			_, err = w.Write(noticesBytes2)
+			require.NoError(t, err)
 		}
 	}))
 	defer server1.Close()