Fix more ci script issues

.ci/install.sh

@@ -2,7 +2,7 @@
 
 set -ex
 
-if [ $TRAVIS_OS_NAME == osx ]; then
+if [ "$TRAVIS_OS_NAME" == "osx" ]; then
     brew update
     brew install qt5 lmdb clang-format ninja libsodium cmark
     brew upgrade boost cmake || true
@@ -17,7 +17,7 @@ if [ $TRAVIS_OS_NAME == osx ]; then
 fi
 
 
-if [ $TRAVIS_OS_NAME == linux ]; then
+if [ "$TRAVIS_OS_NAME" == "linux" ]; then
 
     if [ -z "$QT_VERSION" ]; then
         QT_VERSION="592"

.ci/script.sh

@@ -2,7 +2,7 @@
 
 set -ex
 
-if [ $TRAVIS_OS_NAME == linux ]; then
+if [ "$TRAVIS_OS_NAME" == "linux" ]; then
     export CC=${C_COMPILER}
     export CXX=${CXX_COMPILER}
 
@@ -13,11 +13,11 @@ if [ $TRAVIS_OS_NAME == linux ]; then
     sudo update-alternatives --set g++ "/usr/bin/${CXX_COMPILER}"
 fi
 
-if [ $TRAVIS_OS_NAME == linux ]; then
+if [ "$TRAVIS_OS_NAME" == "linux" ]; then
     source /opt/qt${QT_PKG}/bin/qt${QT_PKG}-env.sh || true;
 fi
 
-if [ $TRAVIS_OS_NAME == osx ]; then
+if [ "$TRAVIS_OS_NAME" == "osx" ]; then
     export CMAKE_PREFIX_PATH=/usr/local/opt/qt5
 fi
 
@@ -33,7 +33,7 @@ cmake -GNinja -H. -Bbuild \
     -DCMAKE_INSTALL_PREFIX=.deps/usr
 cmake --build build
 
-if [ $TRAVIS_OS_NAME == osx ]; then
+if [ "$TRAVIS_OS_NAME" == "osx" ]; then
     make lint;
 
     if [ $DEPLOYMENT == 1 ] && [ ! -z $VERSION ] ; then
@@ -41,6 +41,6 @@ if [ $TRAVIS_OS_NAME == osx ]; then
     fi
 fi
 
-if [ $TRAVIS_OS_NAME == linux ]  && [ $DEPLOYMENT == 1 ] && [ ! -z $VERSION ] ; then
+if [ "$TRAVIS_OS_NAME" == "linux" ] && [ $DEPLOYMENT == 1 ] && [ ! -z $VERSION ]; then
     make linux-deploy;
 fi