Bug#18463911 : SERVER CRASHES ON CREATING A TEMP TABLE WITH

               CERTAIN MAX_HEAP_TABLE_SIZE VALUES

Followup patch to fix failure on Window machine.

storage/heap/hp_block.c

@@ -75,7 +75,7 @@ int hp_get_new_block(HP_BLOCK *block, size_t *alloc_length)
     This doesn't add much overhead - with current values of sizeof(HP_PTRS) 
     and my_default_record_cache_size we get about 1/128 unused memory.
    */
-  *alloc_length= sizeof(HP_PTRS)* i + (ulong) block->records_in_block *
+  *alloc_length= sizeof(HP_PTRS)* i + (ulonglong) block->records_in_block *
                                               block->recbuffer;
   if (!(root=(HP_PTRS*) my_malloc(*alloc_length,MYF(MY_WME))))
     return 1;

storage/heap/hp_create.c

@@ -240,7 +240,7 @@ static void init_block(HP_BLOCK *block, uint reclength, ulong min_records,
   records_in_block= max_records / 10;
   if (records_in_block < 10 && max_records)
     records_in_block= 10;
-  if (!records_in_block || (ulong) records_in_block * recbuffer >
+  if (!records_in_block || (ulonglong) records_in_block * recbuffer >
       (my_default_record_cache_size-sizeof(HP_PTRS)*HP_MAX_LEVELS))
     records_in_block= (my_default_record_cache_size - sizeof(HP_PTRS) *
 		      HP_MAX_LEVELS) / recbuffer + 1;