tools: libxc: restore: csum the correct page

In verify mode, we map the guest memory, and the guest page is
region_base + i * PAGE_SIZE. So we should csum page (region_base
+ i * PAGE_SIZE), not (region_base + (i+curbatch) * PAGE_SIZE)

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

tools/libxc/xc_domain_restore.c

@@ -1405,7 +1405,7 @@ static int apply_batch(xc_interface *xch, uint32_t dom, struct restore_ctx *ctx,
 
                 DPRINTF("************** pfn=%lx type=%lx gotcs=%08lx "
                         "actualcs=%08lx\n", pfn, pagebuf->pfn_types[pfn],
-                        csum_page(region_base + (i + curbatch)*PAGE_SIZE),
+                        csum_page(region_base + i * PAGE_SIZE),
                         csum_page(buf));
 
                 for ( v = 0; v < 4; v++ )