[tz] [PATCH 2/2] * theory.html: Fix HAVE_TZNAME typo.

[Paul Eggert]

---
 theory.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/theory.html b/theory.html
index e91e630..7fc9d46 100644
--- a/theory.html
+++ b/theory.html
@@ -1141,7 +1141,7 @@ The vestigial <abbr>API</abbr>s are:
     may now examine <code>localtime(&clock)->tm_zone</code>
     (if <code>TM_ZONE</code> is defined) or
     <code>tzname[localtime(&clock)->tm_isdst]</code>
-    (if <code>HAVE_TZNAME</code> is defined) to learn the correct time
+    (if <code>HAVE_TZNAME</code> is nonzero) to learn the correct time
     zone abbreviation to use.
   </li>
   <li>
-- 
2.17.1