do not install ndb slave if no slaves

    fixed memleak in ndbcluster_end

mysql-test/mysql-test-run.pl

@@ -1857,7 +1857,7 @@ sub mysql_install_db () {
     }
   }
 
-  if ( ndbcluster_install_slave() )
+  if ( $use_slaves and ndbcluster_install_slave() )
   {
     if ( $opt_force)
     {

sql/ha_ndbcluster.cc

@@ -6217,10 +6217,10 @@ static int ndbcluster_end(ha_panic_function type)
 #ifdef HAVE_NDB_BINLOG
   {
     pthread_mutex_lock(&ndbcluster_mutex);
-    for (uint i= 0; i < ndbcluster_open_tables.records; i++)
+    while (ndbcluster_open_tables.records)
     {
       NDB_SHARE *share=
-        (NDB_SHARE*) hash_element(&ndbcluster_open_tables, i);
+        (NDB_SHARE*) hash_element(&ndbcluster_open_tables, 0);
 #ifndef DBUG_OFF
       fprintf(stderr, "NDB: table share %s with use_count %d not freed\n",
               share->key, share->use_count);