Error in the SQLGetTypeInfo for WCHAR Types

It can affects use of connector in dg4odbc

To repeat:

ODBC_TEST(t_odbc84)

{ CHECK_STMT_RC(Stmt, SQLGetTypeInfo(Stmt, SQL_WCHAR)); is_num(myrowcount(Stmt), 1); CHECK_STMT_RC(Stmt, SQLFreeStmt(Stmt, SQL_CLOSE)); CHECK_STMT_RC(Stmt, SQLGetTypeInfo(Stmt, SQL_WVARCHAR)); is_num(myrowcount(Stmt), 1); CHECK_STMT_RC(Stmt, SQLFreeStmt(Stmt, SQL_CLOSE)); CHECK_STMT_RC(Stmt, SQLGetTypeInfo(Stmt, SQL_WLONGVARCHAR)); is_num(myrowcount(Stmt), 1); CHECK_STMT_RC(Stmt, SQLFreeStmt(Stmt, SQL_CLOSE)); return OK; }