Move assignment not working for non-empty containers

[somaveszelovszki]

The move assignment is not working properly for some container types if the target is not empty. Affected container types: priority_queue, set, multiset. Solution: clear() needs to be called in these move assignment functions before adding the new elements to the target container. I already have the fix locally, but I don't have permission to push my branch and create a PR.

[jwellbelove]

I think you have to fork the project to do a PR.

[somaveszelovszki]

Thank you, I forked the project and created a PR.

[jwellbelove]

Fixed 20.38.2