multi-select broke

[bdarcus]

Selection of multiple candidates broke (returns empty results), as a result of this change. I guess I didn't test it enough.

The first result below is with a single selection, and the other with two.

ELISP> (bibtex-actions-read)
("sassen2000")

ELISP> (bibtex-actions-read)
(nil nil)

I've established the problem is with --get-candidates.

[bdarcus]

@clemera - before I dig into this further, did you change anything with crm in the past few days? I see your latest commit fixed a crm-related issue, but I'm running that commit.

EDIT: nevermind. I rolled back to the selectrum commit I know worked, and the problem persists, so must be in my code.