Fix a test case (proper clean up).

mysql-test/r/mysqldump.result:
  Update results.
mysql-test/t/mysqldump.test:
  Fix a bug in the test case that left user mysqltest_1@localhost 
  around (this broke furhter tests).

mysql-test/r/mysqldump.result

@@ -2876,7 +2876,7 @@ drop view v1;
 drop table t1;
 drop database mysqldump_dbb;
 use test;
-create user mysqltest_1;
+create user mysqltest_1@localhost;
 create table t1(a int, b varchar(34));
 reset master;
 mysqldump: Couldn't execute 'FLUSH TABLES': Access denied; you need the RELOAD privilege for this operation (1227)
@@ -2891,4 +2891,4 @@ CREATE TABLE `t1` (
   `b` varchar(34) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1;
 drop table t1;
-drop user mysqltest_1;
+drop user mysqltest_1@localhost;

mysql-test/t/mysqldump.test

@@ -1273,7 +1273,7 @@ drop database mysqldump_dbb;
 use test;
 
 # Create user without sufficient privs to perform the requested operation
-create user mysqltest_1;
+create user mysqltest_1@localhost;
 create table t1(a int, b varchar(34));
 
 # To get consistent output, reset the master, starts over from first log
@@ -1308,4 +1308,4 @@ grant REPLICATION CLIENT on *.* to mysqltest_1@localhost;
 
 # Clean up
 drop table t1;
-drop user mysqltest_1;
+drop user mysqltest_1@localhost;