fix some go vet errors

chan.go

@@ -176,8 +176,6 @@ func (re *chanResponseEmitter) Emit(v interface{}) error {
 	case <-re.done:
 		return context.Canceled
 	}
-
-	return nil
 }
 
 func (re *chanResponseEmitter) SetError(v interface{}, errType cmdkit.ErrorType) {

http/handler.go

@@ -199,7 +199,7 @@ func (i internalHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	select {
 	case <-d.Done():
 	case <-req.Context().Done():
-		log.Error("waiting for http.Responseemitter to close but then %s", req.Context().Err())
+		log.Errorf("waiting for http.Responseemitter to close but then %s", req.Context().Err())
 		// too late to send an error, just return
 	}
 
@@ -219,7 +219,7 @@ func NewServerConfig() *ServerConfig {
 	return cfg
 }
 
-func (cfg ServerConfig) AllowedOrigins() []string {
+func (cfg *ServerConfig) AllowedOrigins() []string {
 	cfg.cORSOptsRWMutex.RLock()
 	defer cfg.cORSOptsRWMutex.RUnlock()
 	return cfg.cORSOpts.AllowedOrigins
@@ -239,7 +239,7 @@ func (cfg *ServerConfig) AppendAllowedOrigins(origins ...string) {
 	cfg.cORSOpts.AllowedOrigins = append(cfg.cORSOpts.AllowedOrigins, origins...)
 }
 
-func (cfg ServerConfig) AllowedMethods() []string {
+func (cfg *ServerConfig) AllowedMethods() []string {
 	cfg.cORSOptsRWMutex.RLock()
 	defer cfg.cORSOptsRWMutex.RUnlock()
 	return []string(cfg.cORSOpts.AllowedMethods)

http/responseemitter.go

@@ -289,5 +289,4 @@ func flushCopy(w io.Writer, r io.Reader) error {
 
 		f.Flush()
 	}
-	return nil
 }

legacy_test.go

@@ -114,7 +114,7 @@ func TestOldCommand(t *testing.T) {
 	}
 
 	if str != expected {
-		t.Fatal("expected value %#v, got %#v", expected, str)
+		t.Fatalf("expected value %#v, got %#v", expected, str)
 	}
 }
 
@@ -179,11 +179,11 @@ func TestTeeEmitter(t *testing.T) {
 	}
 
 	if buf1.String() != expect {
-		t.Fatal("expected %#v, got %#v", expect, buf1.String())
+		t.Fatalf("expected %#v, got %#v", expect, buf1.String())
 	}
 
 	if buf2.String() != expect {
-		t.Fatal("expected %#v, got %#v", expect, buf2.String())
+		t.Fatalf("expected %#v, got %#v", expect, buf2.String())
 	}
 }
 

request.go

@@ -119,11 +119,11 @@ func (r *request) Option(name string) *cmdkit.OptionValue {
 	for _, n := range option.Names() {
 		val, found := r.options[n]
 		if found {
-			return &cmdkit.OptionValue{val, found, option}
+			return &cmdkit.OptionValue{Value: val, ValueFound: found, Def: option}
 		}
 	}
 
-	return &cmdkit.OptionValue{option.Default(), false, option}
+	return &cmdkit.OptionValue{Value: option.Default(), ValueFound: false, Def: option}
 }
 
 // Options returns a copy of the option map

response_test.go

@@ -135,7 +135,7 @@ func TestHandleError(t *testing.T) {
 
 	go func() {
 		for v, err := resFwd.Next(); err != io.EOF; {
-			t.Log("received forwarded value %#v, error  %#v", v, err)
+			t.Logf("received forwarded value %#v, error  %#v", v, err)
 		}
 	}()
 

responseemitter_test.go

@@ -44,6 +44,6 @@ func TestCopy(t *testing.T) {
 
 	_, err = res2.Next()
 	if err != io.EOF {
-		t.Fatal("expected EOF but got err=%v", err)
+		t.Fatalf("expected EOF but got err=%v", err)
 	}
 }