Fix for bug #28895 "Test 'information_schema_db' fails on i5/OS 32 bit".

In acl_getroot_no_password(), use a separate variable for traversing the acl_users list so that the last entry is not used when no matching entries are found.


mysql-test/r/view_grant.result:
  Fixed the testcase for bug #14875 which relied on broken behavior. sctx->master_access and sctx->priv_user were being set to the last entry in the acl_users list. That does not happen after the patch for bug #28895, so we get a different warning message.
sql/sql_acl.cc:
  In acl_getroot_no_password(), use a separate variable for traversing the acl_users list so that the last entry is not used when no matching entries are found.

mysql-test/r/view_grant.result

@@ -601,9 +601,9 @@ Warnings:
 Note	1449	There is no 'no-such-user'@'localhost' registered
 SHOW CREATE VIEW v;
 View	Create View
-v	CREATE ALGORITHM=UNDEFINED DEFINER=`no-such-user`@`localhost` SQL SECURITY DEFINER VIEW `v` AS select `t1`.`a` AS `a` from `t1`
+v	CREATE ALGORITHM=UNDEFINED DEFINER=`no-such-user`@`localhost` SQL SECURITY DEFINER VIEW `v` AS select `test`.`t1`.`a` AS `a` from `t1`
 Warnings:
-Note	1449	There is no 'no-such-user'@'localhost' registered
+Warning	1356	View 'test.v' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them
 SELECT * FROM v;
 ERROR HY000: There is no 'no-such-user'@'localhost' registered
 DROP VIEW v;

sql/sql_acl.cc

@@ -978,12 +978,13 @@ bool acl_getroot_no_password(Security_context *sctx, char *user, char *host,
   */
   for (i=0 ; i < acl_users.elements ; i++)
   {
-    acl_user= dynamic_element(&acl_users,i,ACL_USER*);
-    if ((!acl_user->user && !user[0]) ||
-	(acl_user->user && strcmp(user, acl_user->user) == 0))
+    ACL_USER *acl_user_tmp= dynamic_element(&acl_users,i,ACL_USER*);
+    if ((!acl_user_tmp->user && !user[0]) ||
+        (acl_user_tmp->user && strcmp(user, acl_user_tmp->user) == 0))
     {
-      if (compare_hostname(&acl_user->host, host, ip))
+      if (compare_hostname(&acl_user_tmp->host, host, ip))
       {
+        acl_user= acl_user_tmp;
         res= 0;
         break;
       }