Further code review for new integerset code.
Mostly cosmetic adjustments, but I added a more reliable method of
detecting whether an iteration is in progress.
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/f7ff0ae8428f9001eab244cb2535f40d29f218e9
Modified Files
--------------
src/backend/lib/integerset.c | 190 +++++++++++----------
src/test/modules/test_integerset/README | 8 +-
src/test/modules/test_integerset/test_integerset.c | 15 +-
3 files changed, 111 insertions(+), 102 deletions(-)