[evince] xps: Fix -Wsign-compare warning

[Christian Persch <chpe src gnome org>]

commit 3d23f528f85ccdc1be8cf74138dee2c82106dd18
Author: Christian Persch <chpe gnome org>
Date:   Fri Jul 26 22:11:01 2013 +0200

    xps: Fix -Wsign-compare warning

 backend/xps/xps-document.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/backend/xps/xps-document.c b/backend/xps/xps-document.c
index c68cfea..23f4737 100644
--- a/backend/xps/xps-document.c
+++ b/backend/xps/xps-document.c
@@ -295,7 +295,7 @@ link_action_from_target (XPSDocument    *xps_document,
 
        if (gxps_link_target_is_internal (target)) {
                EvLinkDest  *dest = NULL;
-               guint        doc;
+               gint         doc;
                const gchar *anchor;
 
                anchor = gxps_link_target_get_anchor (target);