client/mysqldump.c:
  Slave needs to be initialized with 0
dbug/dbug.c:
  Removed not existing function
plugin/semisync/semisync_master.cc:
  Fixed compiler warning
sql/opt_range.cc:
  thd needs to be set early as it's used in some error conditions.
sql/sql_table.cc:
  Changed to use uchar* to make array indexing portable
storage/innobase/handler/ha_innodb.cc:
  Removed not used variable
storage/maria/ma_delete.c:
  Fixed compiler warning
storage/maria/ma_write.c:
  Fixed compiler warning