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>

security/selinux/selinuxfs.c

@@ -1347,7 +1347,7 @@ static ssize_t sel_write_avc_cache_threshold(struct file *file,
 {
 	char *page;
 	ssize_t ret;
-	int new_value;
+	unsigned int new_value;
 
 	ret = task_has_security(current, SECURITY__SETSECPARAM);
 	if (ret)