new instance of the struct type for scanjsonvalue #1979

[Slitherings]

First pull request, wasn't able to test or make sure but this code looks like a fix towards the Scan JSON value get panic #1979
issue (not sure about the "return nil" code on 269) but aside from that hopefully this can be a step towards fixing this issue, but I saw this as a good time to push a potential fix since pg is in the process of migrating to Bun.

[elliotcourant]

I kind of dropped the ball on that issue and never looped back to it sorry. I can take a closer look at this code locally soon and see if I can come up with a test or point you in a direction for a test.

[Slitherings]

I kind of dropped the ball on that issue and never looped back to it sorry. I can take a closer look at this code locally soon and see if I can come up with a test or point you in a direction for a test.

All good, keep me posted just trying to help!

[elliotcourant]

@Slitherings is there a unit test to support this change?

[elliotcourant]

Sorry pushing all the wrong buttons, I need to figure out how to get this tested. Ideally we should have a unit test that would have failed before this patch but passes with it.