Get rid of an unused parameter warning on win

This is a backport of bed79c47f4ec0ee72b19e2b81c54131d516d07ef which
accidentally only went into master

diff --git a/src/common/util.c b/src/common/util.c
index de1ca3684d93afd3b11dda8728d757697b29d1a7..7675ede4334d4039f28701927cfd1c7325cfb859 100644 (file)
--- a/src/common/util.c
+++ b/src/common/util.c
@@ -1698,6 +1698,8 @@ check_private_dir(const char *dirname, cpd_check_t check,
   struct passwd *pw = NULL;
   uid_t running_uid;
   gid_t running_gid;
+#else
+  (void)effective_user;
 #endif
 
   tor_assert(dirname);