fix: close HTTP response body on WebSocket dial failure

Author: rgarcia

lib/cp.go

@@ -157,6 +157,7 @@ func CpToInstance(ctx context.Context, cfg CpConfig, opts CpToInstanceOptions) e
 	ws, resp, err := dialer.DialContext(ctx, wsURL, headers)
 	if err != nil {
 		if resp != nil {
+			defer resp.Body.Close()
 			body, _ := io.ReadAll(resp.Body)
 			return fmt.Errorf("websocket connect failed (HTTP %d): %s", resp.StatusCode, string(body))
 		}
@@ -358,6 +359,7 @@ func CpFromInstance(ctx context.Context, cfg CpConfig, opts CpFromInstanceOption
 	ws, resp, err := dialer.DialContext(ctx, wsURL, headers)
 	if err != nil {
 		if resp != nil {
+			defer resp.Body.Close()
 			body, _ := io.ReadAll(resp.Body)
 			return fmt.Errorf("websocket connect failed (HTTP %d): %s", resp.StatusCode, string(body))
 		}