Fix wrong merge of patch for Bug#46639.

sql/ha_partition.cc

@@ -4640,19 +4640,6 @@ int ha_partition::handle_unordered_scan_next_partition(uchar * buf)
       break;
     case partition_index_first:
       DBUG_PRINT("info", ("index_first on partition %d", i));
-      /*
-        MyISAM engine can fail if we call index_first() when indexes disabled
-        that happens if the table is empty.
-        Here we use file->stats.records instead of file->records() because
-        file->records() is supposed to return an EXACT count, and it can be
-        possibly slow. We don't need an exact number, an approximate one- from
-        the last ::info() call - is sufficient.
-      */
-      if (file->stats.records == 0)
-      {
-        error= HA_ERR_END_OF_FILE;
-        break;
-      }
       error= file->ha_index_first(buf);
       break;
     case partition_index_first_unordered:
@@ -4740,36 +4727,10 @@ int ha_partition::handle_ordered_index_scan(uchar *buf, bool reverse_order)
                                      m_start_key.flag);
       break;
     case partition_index_first:
-      /*
-        MyISAM engine can fail if we call index_first() when indexes disabled
-        that happens if the table is empty.
-        Here we use file->stats.records instead of file->records() because
-        file->records() is supposed to return an EXACT count, and it can be
-        possibly slow. We don't need an exact number, an approximate one- from
-        the last ::info() call - is sufficient.
-      */
-      if (file->stats.records == 0)
-      {
-        error= HA_ERR_END_OF_FILE;
-        break;
-      }
       error= file->ha_index_first(rec_buf_ptr);
       reverse_order= FALSE;
       break;
     case partition_index_last:
-      /*
-        MyISAM engine can fail if we call index_last() when indexes disabled
-        that happens if the table is empty.
-        Here we use file->stats.records instead of file->records() because
-        file->records() is supposed to return an EXACT count, and it can be
-        possibly slow. We don't need an exact number, an approximate one- from
-        the last ::info() call - is sufficient.
-      */
-      if (file->stats.records == 0)
-      {
-        error= HA_ERR_END_OF_FILE;
-        break;
-      }
       error= file->ha_index_last(rec_buf_ptr);
       reverse_order= TRUE;
       break;