Fix delay when yield longer than 1ms

teensy3/pins_teensy.c

@@ -1100,7 +1100,7 @@ void delay(uint32_t ms)
 
 	if (ms > 0) {
 		while (1) {
-			if ((micros() - start) >= 1000) {
+			while ((micros() - start) >= 1000) {
 				ms--;
 				if (ms == 0) return;
 				start += 1000;