fix Issue 9689 - std.typecons.Proxy breaks with @disable this(this)
Merge pull request #1738 from 9rnsr/fix9689

[REG2.063a] Issue 9689 - std.typecons.Proxy breaks with @disable this(this)
fix Issue 9694 - A member struct that has mutable opEquals reports weird error message
Merge pull request #1741 from 9rnsr/fix9694

[REG2.063a] Issue 9694 - A member struct that has mutable opEquals reports weird error message