Fix `signal` calls where the data argument is not a list

* test/src/thread-tests.el (threads-join-error):
* test/src/emacs-module-resources/mod-test.c (Fmod_test_signal):
* src/print.c (print_bind_overrides):
* lisp/url/url-future.el (url-future-finish, url-future-errored)
(url-future-call, url-future-cancel): Make sure signal's data is a list.

* test/src/emacs-module-tests.el (mod-test-non-local-exit-signal-test):
Adjust accordingly.

1 files changed, 2 insertions, 2 deletions

diff --git a/test/src/thread-tests.el b/test/src/thread-tests.el
index 9cbe1f3a1aa..c575f13b488 100644
--- a/test/src/thread-tests.el
+++ b/test/src/thread-tests.el
@@ -122,10 +122,10 @@
   (skip-unless (featurep 'threads))
   (let ((thread (make-thread #'threads-thread-sleeps))
         err)
-    (thread-signal thread 'error "Error signal for thread")
+    (thread-signal thread 'error '("Error signal for thread"))
     (thread-yield)
     (setq err (should-error (thread-join thread)))
-    (should (equal err '(error . "Error signal for thread")))))
+    (should (equal err '(error "Error signal for thread")))))
 
 (defvar threads-test-binding nil)