Fix number->string conversion in PS to follow the manual
Fix number->string conversion in PS to follow the manual

Field's display width should not constraint the value in the
column. The manual says that if the column's value is longer
than the display width it's still displayed in full.

Followup for 3e8973c

MariaDB/mariadb-connector-c,ottok/mariadb-connector-c,ottok/mariadb-connector-c,ottok/mariadb-connector-c,MariaDB/mariadb-connector-c,MariaDB/mariadb-connector-c