Mathias Bynens e654d7b2ae Quote variables in ci_build.sh (#1858)
This makes it possible to run the script locally even if `TRAVIS_PULL_REQUEST` is not set.

Currently, it results in an error:

tools/scripts/ci_build.sh: line 2: [: !=: unary operator expected
2018-10-15 11:02:51 -04:00
..