mysql.proc -> "The table is probably corrupted" is an excessive error

The likehood of mysql.proc being corrupted because of the errors it gets are unlikely. Its usually got a fixable structure with mariadb-upgrade.

mysq.proc in overriding the function "Table_check_intact_log_error::report_error" creates the excessive potential corruption warnings.

The calls to report_error in sql/table.cc, verifing the system table structures, call report error with

• ER_COL_COUNT_DOESNT_MATCH_PLEASE_UPDATE
• ER_COL_COUNT_DOESNT_MATCH_CORRUPTED_V2 (when the versions of table and server are the same)
• 0 - for when datatypes in table don't match
• 0 - for missing /incorrect primary or secondary keys

For the mysql.proc table everything non-0 is mapped to ER_CANNOT_LOAD_FROM_TABLE_V2