System information (version)

• OpenCV => 4.5.4
• Operating System / Platform => Ubuntu
• Compiler => clang

Detailed description

When using cvtColor with COLOR_YUV2BGR_UYVY (or any COLOR_YUV2BGR_*), the code assumes the width to be even while it should be checked for it (probably something to add to CvtHelper).
The assumption is made here:

(i+=4 is done while we do not even know if 2*width is a multiple of 4).

Steps to reproduce

Use a simple 1x1 CV8U_C2 matrix and the code will run but will read data outside the matrix (which should be 1x2).

Issue submission checklist

• I report the issue, it's not a question
• I checked the problem with documentation, FAQ, open issues,
  forum.opencv.org, Stack Overflow, etc and have not found solution
• I updated to latest OpenCV version and the issue is still there