package/avahi: ignore CVE-2021-26720

CVE-2021-26720 is an issue in avahi-daemon-check-dns.sh, which is part of
the Debian packaging and not part of upstream avahi - So ignore the CVE.

https://security-tracker.debian.org/tracker/CVE-2021-26720

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
(cherry picked from commit 3eadd7674061f6165b08ca0e99864e0cf26b090e)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/avahi/avahi.mk

@@ -11,6 +11,10 @@ AVAHI_LICENSE_FILES = LICENSE
 AVAHI_CPE_ID_VENDOR = avahi
 AVAHI_INSTALL_STAGING = YES
 
+# CVE-2021-26720 is an issue in avahi-daemon-check-dns.sh, which is
+# part of the Debian packaging and not part of upstream avahi
+AVAHI_IGNORE_CVES += CVE-2021-26720
+
 AVAHI_CONF_ENV = \
 	avahi_cv_sys_cxx_works=yes \
 	DATADIRNAME=share