[travis] Fix unbound variable

7 years ago · afe5317592
parent 20d373b5f9
commit afe5317592
1 changed files with 1 additions and 1 deletions
--- a/scripts/travis/before_script.sh
+++ b/scripts/travis/before_script.sh
@ -4,6 +4,6 @@ set -eu

 export PATH="$PATH:$HOME/.cargo/bin"
 if [[ "$TRAVIS_RUST_VERSION" == "nightly" ]]; then
-  export LD_LIBRARY_PATH=$(rustc +nightly --print sysroot)/lib:$LD_LIBRARY_PATH
+  export LD_LIBRARY_PATH="$(rustc +nightly --print sysroot)/lib:${LD_LIBRARY_PATH:-""}"
  make install-tools
 fi