INSTALL PLUGIN null_audit SONAME 'adt_null.so';
SET collation_connection='ucs2_general_ci';
PREPARE foo FROM @bar;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1
UNINSTALL PLUGIN null_audit;
Warnings:
Warning	1620	Plugin is busy and will be uninstalled on shutdown
