$NetBSD$

gcc-4.7.3 flags as: variable set but not used [-Werror=unused-but-set-variable]

--- xen/common/grant_table.c.orig	2009-08-06 21:56:41.000000000 +0900
+++ xen/common/grant_table.c	2013-05-30 10:04:19.000000000 +0900
@@ -474,7 +474,7 @@ __gnttab_unmap_common(
     domid_t          dom;
     struct domain   *ld, *rd;
     struct active_grant_entry *act;
-    grant_entry_t   *sha;
+    // grant_entry_t   *sha;  /* gcc47 flags */
     s16              rc = 0;
     u32              old_pin;
 
@@ -522,7 +522,7 @@ __gnttab_unmap_common(
     spin_lock(&rd->grant_table->lock);
 
     act = &active_entry(rd->grant_table, op->map->ref);
-    sha = &shared_entry(rd->grant_table, op->map->ref);
+    // sha = &shared_entry(rd->grant_table, op->map->ref); /* gcc47 flags */
     old_pin = act->pin;
 
     if ( op->frame == 0 )