libxl: xs_read accepts NULL for *len parameter

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
committer: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

diff --git a/tools/libxl/libxl_xshelp.c b/tools/libxl/libxl_xshelp.c
index 90acd5d045fb1720eda3d231620caee85be5ae32..cfd7be3cb5860c26347e86cece10cefb7b4f756d 100644 (file)
--- a/tools/libxl/libxl_xshelp.c
+++ b/tools/libxl/libxl_xshelp.c
@@ -110,10 +110,9 @@ int libxl_xs_write(libxl_gc *gc, xs_transaction_t t,
 char * libxl_xs_read(libxl_gc *gc, xs_transaction_t t, char *path)
 {
     libxl_ctx *ctx = libxl_gc_owner(gc);
-    unsigned int len;
     char *ptr;
 
-    ptr = xs_read(ctx->xsh, t, path, &len);
+    ptr = xs_read(ctx->xsh, t, path, NULL);
     if (ptr != NULL) {
         libxl_ptr_add(gc, ptr);
         return ptr;