hydra--around-find-function-search-for-symbol-advice breaks xref

[Colin McLear]

With hydra--around-find-function-search-for-symbol-advice enabled none of the xref find definition functions work. I'm using emacs 28.2 on macOS 12.6 with the most recent version of hydra. I'm not sure what changed about emacs 28 to do this so I suspect it has to do with a commit in the last few months, perhaps one that backported to 28 from master.

EDIT: the error message is always related to a c file and says "wrong-type-argument listp" and then a path to the c file.