[MM-61074] Fix errcheck issues in oauth_test.go and web_test.go (#30707)

Co-authored-by: Claude <noreply@anthropic.com>

server/cmd/mattermost/commands/cmdtestlib.go

@@ -37,13 +37,13 @@ type testHelper struct {
 }
 
 // Setup creates an instance of testHelper.
-func Setup(t testing.TB) *testHelper {
+func Setup(tb testing.TB) *testHelper {
 	dir, err := testlib.SetupTestResources()
 	if err != nil {
 		panic("failed to create temporary directory: " + err.Error())
 	}
 
-	api4TestHelper := api4.Setup(t)
+	api4TestHelper := api4.Setup(tb)
 
 	testHelper := &testHelper{
 		TestHelper:     api4TestHelper,
@@ -59,13 +59,13 @@ func Setup(t testing.TB) *testHelper {
 }
 
 // Setup creates an instance of testHelper.
-func SetupWithStoreMock(t testing.TB) *testHelper {
+func SetupWithStoreMock(tb testing.TB) *testHelper {
 	dir, err := testlib.SetupTestResources()
 	if err != nil {
 		panic("failed to create temporary directory: " + err.Error())
 	}
 
-	api4TestHelper := api4.SetupWithStoreMock(t)
+	api4TestHelper := api4.SetupWithStoreMock(tb)
 	systemStore := mocks.SystemStore{}
 	systemStore.On("Get").Return(make(model.StringMap), nil)
 	licenseStore := mocks.LicenseStore{}

server/cmd/mattermost/commands/server_test.go

@@ -27,9 +27,9 @@ type ServerTestHelper struct {
 }
 
 //nolint:golint,unused
-func SetupServerTest(t testing.TB) *ServerTestHelper {
+func SetupServerTest(tb testing.TB) *ServerTestHelper {
 	if testing.Short() {
-		t.SkipNow()
+		tb.SkipNow()
 	}
 	// Build a channel that will be used by the server to receive system signals...
 	interruptChan := make(chan os.Signal, 1)