image-desc: Fix fdinfo format

We pass unsigned 4 byte integer here, so
use appropriate format.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

criu/image-desc.c

@@ -26,7 +26,7 @@
 
 struct cr_fd_desc_tmpl imgset_template[CR_FD_MAX] = {
 	FD_ENTRY(INVENTORY,	"inventory"),
-	FD_ENTRY(FDINFO,	"fdinfo-%d"),
+	FD_ENTRY(FDINFO,	"fdinfo-%u"),
 	FD_ENTRY(PAGEMAP,	"pagemap-%ld"),
 	FD_ENTRY(SHMEM_PAGEMAP,	"pagemap-shmem-%ld"),
 	FD_ENTRY(REG_FILES,	"reg-files"),