From ecadef6e48460cdbb271c13817534b357bd92341 Mon Sep 17 00:00:00 2001
From: Dan Liew <daniel.liew@imperial.ac.uk>
Date: Sun, 15 Oct 2017 17:25:12 +0100
Subject: [PATCH] [TravisCI] Try to fix case in `run_quiet` where the script
 would fail with.

```
-ne: unary operator expected
```
---
 contrib/ci/scripts/run_quiet.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/contrib/ci/scripts/run_quiet.sh b/contrib/ci/scripts/run_quiet.sh
index 5abc910e8..0f49da3be 100644
--- a/contrib/ci/scripts/run_quiet.sh
+++ b/contrib/ci/scripts/run_quiet.sh
@@ -34,8 +34,8 @@ function run_quiet() {
     fi
     # Clean up
     rm "${STDOUT}" "${STDERR}"
-    [ $( echo "${OLD_SETTINGS}" | grep -c 'e') -ne 0 ] && set -e
-    [ $( echo "${OLD_SETTINGS}" | grep -c 'x') -ne 0 ] && set -x
+    [ "$( echo "${OLD_SETTINGS}" | grep -c 'e')" != "0" ] && set -e
+    [ "$( echo "${OLD_SETTINGS}" | grep -c 'x')" != "0" ] && set -x
     return ${EXIT_STATUS}
   fi
 }