ensure that u_int32_t and friends are defined

Index: Core/HLE/sceNetAdhoc.cpp
--- Core/HLE/sceNetAdhoc.cpp.orig
+++ Core/HLE/sceNetAdhoc.cpp
@@ -20,6 +20,7 @@
 #endif
 
 #if !defined(_WIN32)
+#include <sys/types.h>
 #include <netinet/tcp.h>
 #endif
 
