Travis CI: Use inline format for 'packages' and 'sources'

(refactoring of commit 6098194)

diff --git a/.travis.yml b/.travis.yml
index d5eca67..74ecc76 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -75,10 +75,8 @@ matrix:
     - os: linux
       addons:
         apt:
-          sources:
-            - llvm-toolchain-trusty-4.0
-          packages:
-            - clang-4.0
+          packages: [ clang-4.0 ]
+          sources: [ llvm-toolchain-trusty-4.0 ]
       compiler: clang-4.0
       dist: trusty
       env: