Use INADDR_BROADCAST instead of hard-coded value (it's part of POSIX and
already appears without #ifdef a couple lines above).
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index ca8dade..b9bc932 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -4940,7 +4940,7 @@
     /* special-case this address as inet_addr might return INADDR_NONE
      * for this */
     if (strcmp(ip_addr, "255.255.255.255") == 0) {
-        packed_addr = 0xFFFFFFFF;
+        packed_addr = INADDR_BROADCAST;
     } else {
 
         packed_addr = inet_addr(ip_addr);