pgsql: Fix portability issue in tests from commit ce773f230. - Mailing list pgsql-committers

Fix portability issue in tests from commit ce773f230.

Modern POSIX seems to require strtod() to accept "-NaN", but there's
nothing about NaN in SUSv2, and some of our oldest buildfarm members
don't like it.  Let's try writing it as -'NaN' instead; that seems
to produce the same result, at least on Intel hardware.

Per buildfarm.

Branch
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REL_14_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/08b96a2b5243957acd3f7c3105af8b5b2d0da3ef

Modified Files
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src/test/regress/expected/hash_func.out | 4 ++--
src/test/regress/sql/hash_func.sql      | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)