Use decode_string_utf_8 in emacs-module.c.

Now that decode_string_utf_8 is available, we can use it to signal
errors on invalid input.

* src/coding.c (syms_of_coding): Move Qutf_8_string_p from json.c
since it’s now used outside json.c.

* src/emacs-module.c (module_decode_utf_8): New helper function.
(module_make_function, module_copy_string_contents): Use it.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/coding.c b/src/coding.c
index ed755b1afcf..8b54281c0bf 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -11745,6 +11745,8 @@ syms_of_coding (void)
 
   DEFSYM (Qignored, "ignored");
 
+  DEFSYM (Qutf_8_string_p, "utf-8-string-p");
+
   defsubr (&Scoding_system_p);
   defsubr (&Sread_coding_system);
   defsubr (&Sread_non_nil_coding_system);