Only build shutdown if CONFIG_NET=y. The warning is pretty annoying

arch @ 152bbe9b

-Subproject commit 7ad0465595bd053d81012283ca9cfc8d67836d17
+Subproject commit 152bbe9b9285d4f6141f3e8839ba0fc1d0d96be2

configs @ 08498337

-Subproject commit 3eab5db1733b5dcd55505925b0a989d8f2085aa3
+Subproject commit 08498337c384cea7c918676495a9b3e6907cb092

libc/net/Make.defs

@@ -37,7 +37,10 @@
 
 CSRCS += lib_addrconfig.c lib_etherntoa.c lib_htons.c lib_htonl.c
 CSRCS += lib_inetaddr.c lib_inetntoa.c lib_inetntop.c lib_inetpton.c
+
+ifeq ($(CONFIG_NET),y)
 CSRCS += lib_shutdown.c
+endif
 
 # Routing table support
 

libc/net/lib_shutdown.c

@@ -39,12 +39,14 @@
 
 #include <sys/socket.h>
 
+#ifdef CONFIG_NET
+
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
 
 /****************************************************************************
- * Public FUnctions
+ * Public Functions
  ****************************************************************************/
 
 /****************************************************************************
@@ -84,3 +86,5 @@ int shutdown(int sockfd, int how)
 #warning Missing Logic
   return OK;
 }
+
+#endif /* CONFIG_NET */