pgsql: Add missing processing of OptTemp in CREATE IF NOT EXISTS variant

Log Message:
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Add missing processing of OptTemp in CREATE IF NOT EXISTS variant
for typed tables. Noted by Robert Haas.

Modified Files:
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pgsql/src/backend/parser:
gram.y (r2.716 -> r2.717)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/gram.y?r1=2.716&r2=2.717)