Skip printing headers when --silent in api

pkg/cmd/api/api.go

@@ -218,7 +218,7 @@ func apiRun(opts *ApiOptions) error {
 }
 
 func processResponse(resp *http.Response, opts *ApiOptions) (endCursor string, err error) {
-	if opts.ShowResponseHeaders {
+	if opts.ShowResponseHeaders && !opts.Silent {
 		fmt.Fprintln(opts.IO.Out, resp.Proto, resp.Status)
 		printHeaders(opts.IO.Out, resp.Header, opts.IO.ColorEnabled())
 		fmt.Fprint(opts.IO.Out, "\r\n")

pkg/cmd/api/api_test.go

@@ -467,8 +467,9 @@ func Test_apiRun_silent(t *testing.T) {
 			}
 			return &http.Client{Transport: tr}, nil
 		},
-		RequestPath: "issues",
-		Silent:      true,
+		RequestPath:         "issues",
+		ShowResponseHeaders: true,
+		Silent:              true,
 	}
 
 	err := apiRun(&options)