extern "C" wrapper needed for inclusion from C++

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3870 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/posix/sys/socket.h

@@ -8,6 +8,10 @@
 #include <sys/stat.h>
 #include <sys/ioctl.h>
 
+#if __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
 typedef uint32 socklen_t;
 
 /* These are the address/protocol families we'll be using... */
@@ -252,5 +256,9 @@ int     getpeername(int, struct sockaddr *, int *);
 int     getsockname(int, struct sockaddr *, int *);
 #endif /* _KERNEL_MODE */
 
+#if __cplusplus
+}
+#endif /* __cplusplus */
+
 #endif /* _SYS_SOCKET_H */