create database doesn't work well in MULTIBYTE mode

Hi

I have a crash while creating regression database in pararell regression
test.
Seems it's due to the following change.

@@ -2638,7 +2705,14 @@
n->dbname = $3;
n->dbpath = $5;
#ifdef MULTIBYTE
- n->encoding = $6;
+ if ($6 != NULL) {
+ n->encoding = pg_char_to_encoding($6);
+ if (n->encoding < 0) {
+ elog(ERROR, "Encoding name '%s' is invalid", $6);
+ }
+ } else {
+ n->encoding = GetTemplateEncoding();
+ }
#else
n->encoding = 0;
#endif

Why ?
$6 is an ival not an str.

Regards.

Hiroshi Inoue
Inoue(at)tpf(dot)co(dot)jp