travis: set dist to trusty (Ubuntu 14.04).

The default is still 12.04 which is EOL.

diff --git a/.travis.yml b/.travis.yml
index 7558f01e9ba1a5fe53fdeeb6f0d456139b840d77..bb635be235a8f9c0eaf5c57ef1334765609ad296 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,4 @@
+dist: trusty
 sudo: false
 language: c