package/asterisk: Fix issues building without SSL

Fixes
http://autobuild.buildroot.net/results/7d0/7d069dd5629e406cecd17bacfa818e7c8e6b2064/

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
1 file changed