Use the libxc error macro to report errors if initialising xenpaging
fails. Also report the actual errno string.

Signed-off-by: Olaf Hering <olaf@aepfle.de>

---
 tools/xenpaging/xenpaging.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- xen-unstable.hg-4.1.22459.orig/tools/xenpaging/xenpaging.c
+++ xen-unstable.hg-4.1.22459/tools/xenpaging/xenpaging.c
@@ -141,7 +141,7 @@ xenpaging_t *xenpaging_init(xc_interface
                 ERROR("EPT not supported for this guest");
                 break;
             default:
-                perror("Error initialising shared page");
+                ERROR("Error initialising shared page: %s", strerror(errno));
                 break;
         }
         goto err;