Out-of-bound GR.BITMAP.CROP crashes BASIC about basic HOT 1 OPEN

	int bitmapPtr = getBitmapArg("Invalid Source Bitmap Pointer");	// get source bitmap number
	if (bitmapPtr < 0) return false;
	Bitmap srcBitmap = BitmapList.get(bitmapPtr);				// get source bitmap
	if (!isNext(',')) return false;

	int[] bounds = getArgs4I();									// [x, y, width, height]
	if (bounds == null) return false;							// error getting values
	if (!checkEOL()) return false;

	if (srcBitmap == null) {
		return RunTimeError("Bitmap was deleted");
	}
	if (bounds[0] < 0 ||	//vv2019-04-23gt
			bounds[0] + bounds[2] > srcBitmap.getWidth() ||
			bounds[1] < 0 ||
			bounds[1] + bounds[3] > srcBitmap.getHeight() ||
			bounds[2] < 1 ||
			bounds[3] < 1
			) {
		return RunTimeError("Crop region out of bounds");
	}	//^^2019-04-23gt

	String errMsg = null;
	Bitmap bitmap = null;