common: direct - fix the case where DirectCardName variable is undefined

Fixes: https://github.com/alsa-project/alsa-ucm-conf/issues/175
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/ucm2/common/direct.conf b/ucm2/common/direct.conf
index f69cbc9016aeb1589413e77f03d8a83a59a1c6c1..3bb0dac431fd6ecbac2d6288bc238a01421721a0 100644 (file)
--- a/ucm2/common/direct.conf
+++ b/ucm2/common/direct.conf
@@ -1,7 +1,7 @@
 If.direct {
        Condition {
                Type String
-               Empty "${var:DirectCardName}"
+               Empty "${var:-DirectCardName}"
        }
        True.Define.DirectCardName "${CardName}"
 }