Fix for BUG#10107: Memory leak in view over subquery:

In mysql_make_view when joining subquery lists, take into account that both lists
can have length > 1 (see also fix for BUG#8490) 
(note to bk trigger: this commit is about BUG#10107)

sql/sql_view.cc

@@ -808,13 +808,15 @@ mysql_make_view(File_parser *parser, TABLE_LIST *table)
         NOTE: we do not support UNION here, so we take only one select
       */
       SELECT_LEX_NODE *end_unit= table->select_lex->slave;
+      SELECT_LEX_UNIT *next_unit;
       for (SELECT_LEX_UNIT *unit= lex->select_lex.first_inner_unit();
            unit;
-           unit= unit->next_unit())
+           unit= next_unit)
       {
-        SELECT_LEX_NODE *save_slave= unit->slave;
         if (unit == end_unit)
           break;
+        SELECT_LEX_NODE *save_slave= unit->slave;
+        next_unit= unit->next_unit();
         unit->include_down(table->select_lex);
         unit->slave= save_slave; // fix include_down initialisation
       }