gocv.FindContours return PointVector instead of []PointVector

[svenczbg]

Description

gocv.FindContours is supposed to return a []PointVector but returns just one PointVector

Steps to Reproduce

gocv/cmd/motion-detect/main.go

Lines 86 to 100 in 3f4d73b

	// now find contours
	contours := gocv.FindContours(imgThresh, gocv.RetrievalExternal, gocv.ChainApproxSimple)
	for i, c := range contours {
	area := gocv.ContourArea(c)
	if area < MinimumArea {
	continue
	}
	status = "Motion detected"
	statusColor = color.RGBA{255, 0, 0, 0}
	gocv.DrawContours(&img, contours, i, statusColor, 2)
	rect := gocv.BoundingRect(c)
	gocv.Rectangle(&img, rect, color.RGBA{0, 0, 255, 0}, 2)
	}

The location of the error is here:
https://github.com/hybridgroup/gocv/blob/release/imgproc.cpp#L223

Your Environment

• Operating System and version: Raspberry Pi OS, Linux Kernel 5.15.84-v8+
• OpenCV version used: 4.8.0
• How did you install OpenCV? Compiled acc. to https://qengineering.eu/install-opencv-on-raspberry-pi.html
• GoCV version used: 0.34.0
• Go version: go version go1.21.0 linux/arm64
• Did you run the env.sh or env.cmd script before trying to go run or go build?

[svenczbg]

sorry, my fault: I didn't noticed PointVector vs PointsVector