This patch fixes a compilation error in xen-mapcache.c .

/home/stefanb/qemu/qemu-git/xen-mapcache.c: In function 
‘xen_ram_addr_from_mapcache’:
/home/stefanb/qemu/qemu-git/xen-mapcache.c:240:42: error: variable ‘pentry’ set 
but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

Signed-off-by: Stefan Berger <stef...@linux.vnet.ibm.com>

---
 xen-mapcache.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Index: qemu-git/xen-mapcache.c
===================================================================
--- qemu-git.orig/xen-mapcache.c
+++ qemu-git/xen-mapcache.c
@@ -237,7 +237,7 @@ uint8_t *xen_map_cache(target_phys_addr_
 
 ram_addr_t xen_ram_addr_from_mapcache(void *ptr)
 {
-    MapCacheEntry *entry = NULL, *pentry = NULL;
+    MapCacheEntry *entry = NULL;
     MapCacheRev *reventry;
     target_phys_addr_t paddr_index;
     target_phys_addr_t size;
@@ -263,7 +263,6 @@ ram_addr_t xen_ram_addr_from_mapcache(vo
 
     entry = &mapcache->entry[paddr_index % mapcache->nr_buckets];
     while (entry && (entry->paddr_index != paddr_index || entry->size != 
size)) {
-        pentry = entry;
         entry = entry->next;
     }
     if (!entry) {


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