8.0 ecpg crashes with "create table as" statement.

ecpg on 8.0.x crashes while compiling "create table as" statements. For
example,

#include <sqlca.h>
int main(){
    EXEC SQL create table a as select 1;
    exit(0);
}

Here's a patch attached.


--
TANIDA Yutaka <tanida@sra.co.jp>