pgsql: Fix -Wmissing-variable-declarations warnings for float.c special

Fix -Wmissing-variable-declarations warnings for float.c special case

This adds extern declarations for the global variables defined in
float.c but not meant for external use.  This is a workaround to be
able to add -Wmissing-variable-declarations to the global set of
warning options in the near future.

Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://www.postgresql.org/message-id/flat/e0a62134-83da-4ba4-8cdb-ceb0111c95ce@eisentraut.org

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/37c6923cf3d8ec1bd44924aab6f58f72754a0e7b

Modified Files
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src/backend/utils/adt/float.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)