libxc: colo: don't leak pfns and iov in send_checkpoint_dirty_pfn_list

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>

tools/libxc/xc_sr_restore.c

@@ -494,6 +494,8 @@ static int send_checkpoint_dirty_pfn_list(struct xc_sr_context *ctx)
 
     rc = 0;
  err:
+    free(pfns);
+    free(iov);
     return rc;
 }