2BUTTON_LED13_ON_NO_IF

byte button1 = 2;
byte button2 = 3;
byte led = 13;
void setup()
{
    pinMode(button1, INPUT_PULLUP);
    pinMode(button2, INPUT_PULLUP);
    pinMode(led, OUTPUT);	
}

void loop()
{
    while((!digitalRead(button1))&&(!digitalRead(button2)))
        {
        digitalWrite(led, HIGH);
        }
    digitalWrite(led, LOW);	
}