MDEV-34937 s3 engine no longer functional on non-gcc builds

Last commit on libmarias3 broke non-gcc builds by excluding
the most important aspect, the snprintf being executed.

Reviewer: Andrew Hutchings <andrew@mariadb.org>
Ref: https://github.com/mariadb-corporation/libmarias3/pull/130

libmarias3 @ 0d5babbe

-Subproject commit 5e6aa32f96ebdbcaf32b90d6182685156f8198b5
+Subproject commit 0d5babbe46f17147ed51efd1f05a0001017a2aad