Only include <netinet/in_systm.h> if it exists

diff --git a/src/ngircd/conn.c b/src/ngircd/conn.c
index 0ff6067f7fe73611340d78c79e60033cb68cc1d0..853ffe8b25b6f65d67caebfb5459d31cbf1ad432 100644 (file)
--- a/src/ngircd/conn.c
+++ b/src/ngircd/conn.c
@@ -37,7 +37,9 @@
 #include <netinet/in.h>
 
 #ifdef HAVE_NETINET_IP_H
-# include <netinet/in_systm.h>
+# ifdef HAVE_NETINET_IN_SYSTM_H
+#  include <netinet/in_systm.h>
+# endif
 # include <netinet/ip.h>
 #endif