net: cleanup unsigned to unsigned int

Use of "unsigned int" is preferred to bare "unsigned" in net tree.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/dn.h b/include/net/dn.h
index 814af0b..c88bf4e 100644
--- a/include/net/dn.h
+++ b/include/net/dn.h
@@ -199,7 +199,7 @@
 	fld->fld_dport = scp->addrrem;
 }
 
-extern unsigned dn_mss_from_pmtu(struct net_device *dev, int mtu);
+extern unsigned int dn_mss_from_pmtu(struct net_device *dev, int mtu);
 
 #define DN_MENUVER_ACC 0x01
 #define DN_MENUVER_USR 0x02