shared/ad: Fix bt_ad_has_data not matching when only type is passed

bt_ad_has_data attempts to match the data portion even when not set
which is useful the user is only interested in actually mataching the
type alone.

diff --git a/src/shared/ad.c b/src/shared/ad.c
index caf078c..b2bba95 100755 (executable)
--- a/src/shared/ad.c
+++ b/src/shared/ad.c
@@ -1022,6 +1022,9 @@ static bool data_match(const void *data, const void *user_data)
        if (d1->type != d2->type)
                return false;
 
+       if (!d2->len && !d2->data)
+               return true;
+
        if (d1->len != d2->len)
                return false;