maxscale crash when executing a prepare statement with zero of parameter

This concerns only 6.1.x version. Issue is corrected in 6.2.0.
feel free to close issue if 6.2 is the supported version of 6.1

If a COM_STMT_PREPARE is send for a command with some parameters then a command COM_STMT_EXECUTE is sent without parameter, maxscale crash with error "MaxScale 6.1.1 received fatal signal 11"

example :
"CREATE TABLE prepare1 (t1 int not null primary key auto_increment, t2 int)"
COM_STMT_PREPARE : "INSERT INTO prepare1(t1, t2) VALUES (?,?)"

command COM_STMT_EXECUTE without parameter will crash maxscale.