Restore a DBUG_SUICIDE for binlog.binlog_truncate_multi_engine

This fixes up 4489a89c
and the test binlog.binlog_truncate_multi_engine
that indirectly invokes the DBUG_SUICIDE.

storage/innobase/log/log0log.cc

@@ -836,6 +836,7 @@ void log_write_up_to(lsn_t lsn, bool flush_to_disk, bool rotate_key,
     ret_lsn2= flush_lock.release(flush_lsn);
 
     log_flush_notify(flush_lsn);
+    DBUG_EXECUTE_IF("crash_after_log_write_upto", DBUG_SUICIDE(););
   }
 
   if (ret_lsn1 || ret_lsn2)