PDF docs build: avoid spurious "warn" in build logs. Improve on e4c886519 so that the string "warn" appears in the output when there's a problem, and not when there isn't. This should silence noise I've been seeing in my buildfarm warning scraper.
Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/ecb8226af63dc8f1c0859977102764704368693b Modified Files -------------- doc/src/sgml/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
