fix unquoted table name leading to sql errors

[noother]

In lib/MySQL_Protocol.cpp MySQL_Protocol::generate_COM_QUERY_from_COM_FIELD_LIST line 2315 there is a query:
char *qt = (char *)"SELECT * FROM %s WHERE 1=0";

The table name here is unquoted, leading to SQL errors if the table name is a keyword or somewhat non-normalized, like:
2020-05-28 15:36:16 MySQL_Session.cpp:4333:handler(): [WARNING] Error during query on (1,sql1,3306): 1064, You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'groups WHERE 1=0' at line 1

[pondix]

Automated message: PR pending admin approval for build testing

[renecannao]

test this please

[renecannao]

@noother : thank you for the PR. Automated testing started

[renecannao]

Thank you