NullReferenceException from GetMySqlDbType

[MaceWindu]

MySqlConnector 0.69.5

Similar to #812 but for geometrycollection type

System.NullReferenceException
   at MySqlConnector.Core.TypeMapper.GetMySqlDbType(String typeName, Boolean unsigned, Int32 length) in /_/src/MySqlConnector/Core/TypeMapper.cs:line 169

Triggered when execute this procedure with SchemaOnly command behavior

[MaceWindu]

FYI, MySql.Data also cannot handle this procedure

[bgrainger]

I can only reproduce with MySQL Server 8.0, not 5.7; not yet sure why it's server-dependent.

[bgrainger]

This is caused by MySQL Server 8.0 changing the standard alias for this data type to GEOMCOLLECTION: https://dev.mysql.com/worklog/task/?id=2388

[bgrainger]

Fixed in 0.69.6.