[master] 7da9144d8 Update osx build and drop sudo: false

[Federico G. Schwindt]

commit 7da9144d84af239571e779867bc453042db0fb44
Author: Federico G. Schwindt <fgsch at lodoss.net>
Date:   Sun Dec 2 18:05:19 2018 +0000

    Update osx build and drop sudo: false

diff --git a/.travis.yml b/.travis.yml
index da2bcbb8b..52424fefc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,5 @@
 ---
 language: c
-sudo: false
 matrix:
   fast_finish: true
   include:
@@ -16,7 +15,7 @@ matrix:
     env: CLANG=7 SAN_FLAGS="--enable-asan --enable-ubsan"
     sudo: required
   - os: osx
-    osx_image: xcode10
+    osx_image: xcode10.1
     compiler: clang
   allow_failures:
   - os: osx