Suppress gcc 4.x -Wpointer-sign (included in -Wall) warnings

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5275 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/slirp/tcp_subr.c b/slirp/tcp_subr.c
index ec423b7..bce07a6 100644
--- a/slirp/tcp_subr.c
+++ b/slirp/tcp_subr.c
@@ -447,7 +447,7 @@
 {
 	struct socket *so;
 	struct sockaddr_in addr;
-	int addrlen = sizeof(struct sockaddr_in);
+	socklen_t addrlen = sizeof(struct sockaddr_in);
 	struct tcpcb *tp;
 	int s, opt;
 
@@ -649,7 +649,7 @@
 		{
 			struct socket *tmpso;
 			struct sockaddr_in addr;
-			int addrlen = sizeof(struct sockaddr_in);
+			socklen_t addrlen = sizeof(struct sockaddr_in);
 			struct sbuf *so_rcv = &so->so_rcv;
 
 			memcpy(so_rcv->sb_wptr, m->m_data, m->m_len);