Slightly improve error check in xenstore_vm_write()

Signed-off-by: Yosuke Iwamatsu <y-iwamatsu@ab.jp.nec.com>

diff --git a/xenstore.c b/xenstore.c
index d30dafa22ec73aa9e5494f113f86574cd87a78ba..6bfcdbbbe42e4c0930e4bc58cb4d4679ce21efcd 100644 (file)
--- a/xenstore.c
+++ b/xenstore.c
@@ -1224,6 +1224,8 @@ int xenstore_vm_write(int domid, const char *key, const char *value)
     int rc = -1;
 
     path = xenstore_vm_key_path(domid, key);
+    if (!path)
+        return 0;
 
     rc = xs_write(xsh, XBT_NULL, path, value, strlen(value));
     if (rc == 0) {