travis: update shellcheck URL

The latest build failed with this error:

```
You are downloading ShellCheck from an outdated URL!
Please update to the new URL:
https://github.com/koalaman/shellcheck/releases/download/stable/shellcheck-stable.linux.x86_64.tar.xz
For more information, see:
https://github.com/koalaman/shellcheck/issues/1871
PS: Sorry for breaking your build :(
```

diff --git a/.travis.yml b/.travis.yml
index 81c83e744a9de71f1b9caeffd6df553f710fa1fe..3afa9a60309dbd2dcc3647aa50b9234be8af2876 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -24,7 +24,7 @@ addons:
 before_install:
   - sudo apt update || true
   - sudo apt install -y gcc-multilib g++-multilib
-  - curl -L "https://storage.googleapis.com/shellcheck/shellcheck-stable.linux.x86_64.tar.xz" | tar -xJ
+  - curl -L "https://github.com/koalaman/shellcheck/releases/download/stable/shellcheck-stable.linux.x86_64.tar.xz" | tar -xJ
   - sudo cp shellcheck-stable/shellcheck /usr/local/bin/
   - CFLAGS="-Werror"
   - CXXFLAGS="-Werror"