Apple's SUN_LEN is broken, override

src/node_net.cc

@@ -350,13 +350,12 @@ static Handle<Value> Connect(const Arguments& args) {
   return Undefined();
 }
 
-#if !defined(SUN_LEN)
+// Mac's SUN_LEN is broken
 #if defined(__APPLE__)
 # define SUN_LEN(ptr) ((ptr)->sun_len-2)
-# else
+#elif !defined(SUN_LEN)
 # define SUN_LEN(ptr) strlen((ptr)->sun_path)
 #endif
-#endif
 
 #define ADDRESS_TO_JS(info, address_storage) \
 do { \