time.c: fix a guard to avoid a warning about unused label

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libc/misc/time/time.c

@@ -2098,7 +2098,8 @@ DONE:
 	daylight = !!_time_tzinfo[1].tzname[0];
 	timezone = _time_tzinfo[0].gmt_offset;
 
-#if defined(__UCLIBC_HAS_TZ_FILE__) || defined(__UCLIBC_HAS_TZ_CACHING__)
+#if (defined(__UCLIBC_HAS_TZ_FILE__) && !defined(__UCLIBC_HAS_TZ_FILE_READ_MANY__)) || \
+	defined(__UCLIBC_HAS_TZ_CACHING__)
 FAST_DONE:
 #endif
 	__UCLIBC_MUTEX_UNLOCK(_time_tzlock);