img: Hide image dir fd into util.c

No image copy occurs since 2b175282, so this
fd can be hidden. Thus fixind the FIXME near it :)
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

include/crtools.h

@@ -114,11 +114,6 @@ extern struct cr_fd_desc_tmpl fdset_template[CR_FD_MAX];
 #define FMT_FNAME_IPCNS_SEM	"ipcns-sem-%d.img"
 #define FMT_FNAME_SK_QUEUES	"sk-queues.img"
 
-/*
- * FIXME -- this is required for legacy image copy only.
- * Don't use it for other reason and remove the former one.
- */
-extern int image_dir_fd;
 extern int open_image_dir(void);
 extern void close_image_dir(void);
 

util.c

@@ -129,6 +129,8 @@ int move_img_fd(int *img_fd, int want_fd)
 	return 0;
 }
 
+static int image_dir_fd = -1;
+
 int open_image(int type, unsigned long flags, ...)
 {
 	char path[PATH_MAX];
@@ -172,8 +174,6 @@ err:
 	return -1;
 }
 
-int image_dir_fd = -1;
-
 int open_image_dir(void)
 {
 	int fd;