integration-cli: SA5001: should check returned error before deferring reg.Close() (staticcheck)

```
integration-cli/docker_cli_registry_user_agent_test.go:78:2: SA5001: should check returned error before deferring reg.Close() (staticcheck)
integration-cli/docker_cli_v2_only_test.go:30:2:             SA5001: should check returned error before deferring reg.Close() (staticcheck)
integration-cli/docker_api_containers_test.go:392:3:         SA5001: should check returned error before deferring resp.Body.Close() (staticcheck)
```

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

integration-cli/docker_api_containers_test.go

@@ -348,6 +348,7 @@ func (s *DockerSuite) TestGetStoppedContainerStats(c *testing.T) {
 		defer cli.Close()
 
 		resp, err := cli.ContainerStats(context.Background(), name, false)
+		assert.NilError(c, err)
 		defer resp.Body.Close()
 		chResp <- err
 	}()

integration-cli/docker_cli_registry_user_agent_test.go

@@ -75,8 +75,9 @@ func (s *DockerRegistrySuite) TestUserAgentPassThrough(c *testing.T) {
 	var ua string
 
 	reg, err := registry.NewMock(c)
-	defer reg.Close()
 	assert.NilError(c, err)
+	defer reg.Close()
+
 	registerUserAgentHandler(reg, &ua)
 	repoName := fmt.Sprintf("%s/busybox", reg.URL())
 

integration-cli/docker_cli_v2_only_test.go

@@ -27,8 +27,8 @@ func makefile(path string, contents string) (string, error) {
 // attempt to contact any v1 registry endpoints.
 func (s *DockerRegistrySuite) TestV2Only(c *testing.T) {
 	reg, err := registry.NewMock(c)
-	defer reg.Close()
 	assert.NilError(c, err)
+	defer reg.Close()
 
 	reg.RegisterHandler("/v2/", func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(404)
@@ -49,11 +49,10 @@ func (s *DockerRegistrySuite) TestV2Only(c *testing.T) {
 	dockerfileName, err := makefile(tmp, fmt.Sprintf("FROM %s/busybox", reg.URL()))
 	assert.NilError(c, err, "Unable to create test dockerfile")
 
-	s.d.Cmd("build", "--file", dockerfileName, tmp)
-
-	s.d.Cmd("run", repoName)
-	s.d.Cmd("login", "-u", "richard", "-p", "testtest", reg.URL())
-	s.d.Cmd("tag", "busybox", repoName)
-	s.d.Cmd("push", repoName)
-	s.d.Cmd("pull", repoName)
+	_, _ = s.d.Cmd("build", "--file", dockerfileName, tmp)
+	_, _ = s.d.Cmd("run", repoName)
+	_, _ = s.d.Cmd("login", "-u", "richard", "-p", "testtest", reg.URL())
+	_, _ = s.d.Cmd("tag", "busybox", repoName)
+	_, _ = s.d.Cmd("push", repoName)
+	_, _ = s.d.Cmd("pull", repoName)
 }