fixed crash on slave when master aborts a query that has % in it.

BitKeeper/etc/logging_ok

@@ -3,3 +3,4 @@ monty@hundin.mysql.fi
 paul@central.snake.net
 serg@serg.mysql.com
 monty@work.mysql.com
+sasha@mysql.sashanet.com

mysql-test/t/rpl000001.test

@@ -42,10 +42,10 @@ save_master_pos;
 connection master1;
 #avoid generating result
 create temporary table t1_temp(n int);
-insert into t1_temp select get_lock('crash_lock', 1) from t2;
+insert into t1_temp select get_lock('crash_lock%20C', 1) from t2;
 
 connection master;
-send update t1 set n = n + get_lock('crash_lock', 2);
+send update t1 set n = n + get_lock('crash_lock%20C', 2);
 connection master1;
 sleep 2;
 select (@id := id) - id from t2;

sql/slave.cc

@@ -862,7 +862,7 @@ point. If you are sure that your master is ok, run this query manually on the\
  slave and then restart the slave with SET SQL_SLAVE_SKIP_COUNTER=1;\
  SLAVE START;", thd->query);
       last_slave_errno = expected_error;
-      sql_print_error(last_slave_error);
+      sql_print_error("%s",last_slave_error);
       return 1;
     default:
       return 0;