selinux: fix type mismatch

avc_cache_threshold is of type unsigned int.  Do not use a signed
new_value in sscanf(page, "%u", &new_value).

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
[PM: subject prefix fix, description cleanup]
Signed-off-by: Paul Moore <paul@paul-moore.com>
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 1b1fd27..0765c5b 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -1347,7 +1347,7 @@
 {
 	char *page;
 	ssize_t ret;
-	int new_value;
+	unsigned int new_value;
 
 	ret = task_has_security(current, SECURITY__SETSECPARAM);
 	if (ret)