Selecting a PR in PR list complains about missing magit-section-value symbol

[c3d]

Steps to reproduce:

• Select a repository
• Fetch the PR list
• Select a PR
• Hit return, apparently bound to magit-gh-pulls-fetch-commit

Expected result:

Shows the PR that was selected

Observed result

Fails with message

magit-gh-section-req-data: Symbol’s function definition is void: magit-section-value

[c3d]

This appears to be a problem with 0.5.3 as bundled on melpa. Checking out master and using that seems to hit different problems, but that (message Contacting host: api.github.com:443 and stuck there).

[c3d]

At least # o does the right thing and shows the PR in a browser.

[c3d]

Apparently, on some PRs, it does something sensible, which is to show the diffs. Does not exactly show the PR itself, but at least, that's no longer in the "bugs" category.

On some other PRs, it does not do anything sensible that I can tell.