Addendum to bug #42144 : fixed a wrong type conversation causing plugin tests

failures on sparc64.

sql/sql_plugin.cc

@@ -3319,7 +3319,7 @@ static int test_plugin_options(MEM_ROOT *tmp_root, struct st_plugin_int *tmp,
      Set plugin loading policy from option value. First element in the option
      list is always the <plugin name> option value.
     */
-    plugin_load_policy= (enum_plugin_load_policy)*(uint*)opts[0].value;
+    plugin_load_policy= (enum_plugin_load_policy)*(ulong*)opts[0].value;
   }
 
   disable_plugin= (plugin_load_policy == PLUGIN_OFF);