Warning in scanf string typing

This fixes a warning about the mismatch of types between
the declared unsigned and integer.

Signed-off-by: Toralf Förster <toralf.foerster@gmx.de>
diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c
index 177d878..32b2488 100644
--- a/security/smack/smackfs.c
+++ b/security/smack/smackfs.c
@@ -1193,7 +1193,7 @@
 
 	data[count] = '\0';
 
-	rc = sscanf(data, "%hhd.%hhd.%hhd.%hhd/%d %s",
+	rc = sscanf(data, "%hhd.%hhd.%hhd.%hhd/%u %s",
 		&host[0], &host[1], &host[2], &host[3], &m, smack);
 	if (rc != 6) {
 		rc = sscanf(data, "%hhd.%hhd.%hhd.%hhd %s",