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/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index 1372c45..95722ed 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -413,7 +413,7 @@
 					opt->is_changed = 1;
 				}
 			} else {
-				unsigned overflow = optptr[3]>>4;
+				unsigned int overflow = optptr[3]>>4;
 				if (overflow == 15) {
 					pp_ptr = optptr + 3;
 					goto error;