Spell __darwin__ correctly, to suppress compiler warning on OSX.

diff --git a/contrib/pg_upgrade/file.c b/contrib/pg_upgrade/file.c
index f035a6ad2f629fc6ea83ea6b3e1cc77885c6e638..2bdda622ebc2e502d438e1ef7e1b74cf1146b443 100644 (file)
--- a/contrib/pg_upgrade/file.c
+++ b/contrib/pg_upgrade/file.c
@@ -245,7 +245,7 @@ pg_scandir(migratorContext *ctx, const char *dirname,
         * autoconf doesn't have a suitable builtin test and it seems overkill
         * to add one just to avoid a warning.
         */
-#elif defined(freebsd) || defined(bsdi) || defined(darwin) || defined(openbsd)
+#elif defined(freebsd) || defined(bsdi) || defined(__darwin__) || defined(openbsd)
        /* no const */
        return scandir(dirname, namelist, (int (*) (struct dirent *)) selector, NULL);
 #else