thread->mypolls.poll_timeout setting in MySQL_Session.c

[taylor840326]

@renecannao I review MySQL_Session.c between 3563 and 3566 lines.

  if (thread->mypolls.poll_timeout==0) { // tune poll timeout
  	if (thread->mypolls.poll_timeout > (unsigned int)mysql_thread___poll_timeout_on_failure) >{
  		thread->mypolls.poll_timeout = mysql_thread___poll_timeout_on_failure;
  	}
  }

if thread->mypolls.poll_timeout ==0 , I think 0 can not bigger than a unsigned int .

[renecannao]

Indeed this seems a bug!
Good catch @taylor840326 !

Thanks

[renecannao]

The correct should be:

  if (
    (thread->mypolls.poll_timeout==0)
    ||
    (thread->mypolls.poll_timeout > (unsigned int)mysql_thread___poll_timeout_on_failure) 
    ) {
        thread->mypolls.poll_timeout = mysql_thread___poll_timeout_on_failure;
  }

[taylor840326]

@renecannao OK! 👍