namespaces: Use long value to check for UINT_MAX

We have a condition

	BUG_ON(kid > UINT_MAX);

but kid is unsigned int so it's never bigger than UINT_MAX,
use unsigned long instead.

CID 1042296
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

namespaces.c

@@ -27,7 +27,7 @@ static struct ns_desc *ns_desc_array[] = {
 
 static unsigned int parse_ns_link(char *link, size_t len, struct ns_desc *d)
 {
-	unsigned int kid = 0;
+	unsigned long kid = 0;
 	char *end;
 
 	if (len >= d->len + 2) {
@@ -40,7 +40,7 @@ static unsigned int parse_ns_link(char *link, size_t len, struct ns_desc *d)
 		}
 	}
 
-	return kid;
+	return (unsigned int)kid;
 }
 
 bool check_ns_proc(struct fd_link *link)