move DBUG_END() after my_thread_global_end(), when all threads have already died.

mysys/my_init.c

@@ -201,11 +201,12 @@ Voluntary context switches %ld, Involuntary context switches %ld\n",
 #endif
   }
 
+  my_thread_end();
+  my_thread_global_end();
+
   if (!(infoflag & MY_DONT_FREE_DBUG))
     DBUG_END();                /* Must be done as late as possible */
 
-  my_thread_end();
-  my_thread_global_end();
   my_mutex_end();
 #if defined(SAFE_MUTEX)
   /*