check for errors from http.Post

webhook.go

@@ -48,6 +48,10 @@ func Execute(suffix, username, title, text string) (err error) {
 	resp, err := http.Post(baseURL + suffix, "application/json",
 		strings.NewReader(string(body)))
 
+	if err != nil {
+		return
+	}
+
 	if resp.StatusCode < 200 || resp.StatusCode > 299 {
 		err = errors.New(resp.Status)
 	}