[Gambas-bugtracker] Bug #1816: [patch] fix build failure fix with mysql8

[bugtracker at gambaswiki.org]

http://gambaswiki.org/bugtracker/edit?object=BUG.1816&from=L21haW4-

Comment #4 by Benoît MINISINI:

This is old code. In the development version 'my_bool' has been replaced by 'char'. There is no 'my_bool' anymore.