Merge branch 'release-v1.47' into matrix-org-hotfixes

1 files changed, 2 insertions, 2 deletions

diff --git a/docker/build_debian.sh b/docker/build_debian.sh

index 801ff45471..9eae38af91 100644
--- a/docker/build_debian.sh
+++ b/docker/build_debian.sh
@@ -5,7 +5,7 @@
 set -ex
 
 # Get the codename from distro env
-DIST=`cut -d ':' -f2 <<< $distro`
+DIST=$(cut -d ':' -f2 <<< "${distro:?}")
 
 # we get a read-only copy of the source: make a writeable copy
 cp -aT /synapse/source /synapse/build
@@ -17,7 +17,7 @@ cd /synapse/build
 # Section to determine which "component" it should go into (see
 # https://manpages.debian.org/stretch/reprepro/reprepro.1.en.html#GUESSING)
 
-DEB_VERSION=`dpkg-parsechangelog -SVersion`
+DEB_VERSION=$(dpkg-parsechangelog -SVersion)
 case $DEB_VERSION in
     *~rc*|*~a*|*~b*|*~c*)
         sed -ie '/^Section:/c\Section: prerelease' debian/control