pgsql: Fix portability issue in ordered-set patch.

Fix portability issue in ordered-set patch.

Overly compact coding in makeOrderedSetArgs() led to a platform dependency:
if the compiler chose to execute the subexpressions in the wrong order,
list_length() might get applied to an already-modified List, giving a
value we didn't want. Per buildfarm.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/cf63c641cae2063a0442d73d49af295301cec61b

Modified Files
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src/backend/parser/gram.y | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

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