Driver for ODBC - qsql_odbc.cpp should use the QMetaType:float when sql type is SQL_FLOAT instead of QVariant::Double

Currently a float must be cast to a double to be save to the database via a QSqlQuery

query.addBindValue( QVariant(f) ); with f being a float, this fails

to make it work we need:
query.addBindValue( QVariant(double(f)) );

The float should be valid there.

Maybe by using QVariant::Private as the type?