Use proper error comparison

main.go

@@ -8,6 +8,7 @@ import (
 	"GoWeb/routes"
 	"context"
 	"embed"
+	"errors"
 	"log"
 	"net/http"
 	"os"
@@ -68,7 +69,7 @@ func main() {
 	go func() {
 		log.Println("Starting server and listening on " + appLoaded.Config.Listen.Ip + ":" + appLoaded.Config.Listen.Port)
 		err := server.ListenAndServe()
-		if err != nil && err != http.ErrServerClosed {
+		if err != nil && !errors.Is(err, http.ErrServerClosed) {
 			log.Fatalf("Could not listen on %s: %v\n", appLoaded.Config.Listen.Ip+":"+appLoaded.Config.Listen.Port, err)
 		}
 	}()

middleware/csrf.go

@@ -6,7 +6,7 @@ import (
 	"net/http"
 )
 
-// Csrf validates the CSRF token and returns the handler function if it succeded
+// Csrf validates the CSRF token and returns the handler function if it succeeded
 func Csrf(f func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
 	return func(w http.ResponseWriter, r *http.Request) {
 		_, err := security.VerifyCsrfToken(r)

restclient/client.go

@@ -21,9 +21,17 @@ func SendRequest(url string, method string, headers map[string]string, body inte
 		reqBody = &bytes.Buffer{}
 		writer := multipart.NewWriter(reqBody)
 		for key, value := range v {
-			writer.WriteField(key, value)
+			err := writer.WriteField(key, value)
+			if err != nil {
+				return http.Response{}, err
 			}
-		writer.Close()
+		}
+
+		err := writer.Close()
+		if err != nil {
+			return http.Response{}, err
+		}
+
 		contentType = writer.FormDataContentType()
 	default:
 		jsonBody, err := json.Marshal(body)