fix typo (most likely fixes #24533 too)

diff --git a/ext/standard/dns.h b/ext/standard/dns.h
index b6072c5b963377086ca0abf14f41330740dc3790..0654ece49096c6fb5f22c41d906579f37b1630ce 100644 (file)
--- a/ext/standard/dns.h
+++ b/ext/standard/dns.h
@@ -23,7 +23,7 @@
 #ifndef DNS_H
 #define DNS_H
 
-#if HAVE_RES_NMKQUERY & HAVE_RES_NSEND & HAVE_DN_EXPAND & HAVE_DN_SKIPNAME
+#if HAVE_RES_NMKQUERY && HAVE_RES_NSEND && HAVE_DN_EXPAND && HAVE_DN_SKIPNAME
 #define HAVE_DNS_FUNCS 1
 #endif