travis: use xenial LLVM package for scan-build

I missed that in commit 99a49d6.

diff --git a/.travis.yml b/.travis.yml
index f2e3030c2b6e8778112c11d2da4597aecd3e3bf6..90c8fb3de746b9398d9cd11333dc69a3e2ea2004 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -340,7 +340,7 @@ matrix:
               apt:
                   sources:
                       - *common_sources
-                      - llvm-toolchain-trusty-7
+                      - llvm-toolchain-xenial-7
                   packages:
                       - *common_packages
                       - clang-7