[NET]: Annotate net_srandom().

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/net.h

@@ -196,7 +196,7 @@ extern struct socket *sockfd_lookup(int fd, int *err);
 extern int	     net_ratelimit(void);
 
 #define net_random()		random32()
-#define net_srandom(seed)	srandom32(seed)
+#define net_srandom(seed)	srandom32((__force u32)seed)
 
 extern int   	     kernel_sendmsg(struct socket *sock, struct msghdr *msg,
 				    struct kvec *vec, size_t num, size_t len);