[PATCH] xfrm: use "unsigned int" in addr_match()

[Alexey Dobriyan]

x86_64 is zero-extending arch so "unsigned int" is preferred over "int"
for address calculations and extending to size_t.

Space savings:

        add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-24 (-24)
        function                                     old     new   delta
        xfrm_state_walk                              708     696     -12
        xfrm_selector_match                          918     906     -12

Signed-off-by: Alexey Dobriyan <adobri...@gmail.com>
---

 include/net/xfrm.h |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -816,12 +816,12 @@ static inline void xfrm_state_hold(struct xfrm_state *x)
 }
 
 static inline bool addr_match(const void *token1, const void *token2,
-                             int prefixlen)
+                             unsigned int prefixlen)
 {
        const __be32 *a1 = token1;
        const __be32 *a2 = token2;
-       int pdw;
-       int pbi;
+       unsigned int pdw;
+       unsigned int pbi;
 
        pdw = prefixlen >> 5;     /* num of whole u32 in prefix */
        pbi = prefixlen &  0x1f;  /* num of bits in incomplete u32 in prefix */