Avoiding error message '[: too many arguments'

Change-Id: I0253723078f5c3e77debfd8a8138559878544959

devbox-scripts/murano-git-install.sh

@@ -42,12 +42,12 @@ function iniset {
     local file=$4
     local line
 
-    if [ -z $section ] ; then
+    if [ -z "$section" ] ; then
         # No section name specified
         sed -i -e "s/^\($option[ \t]*=[ \t]*\).*$/\1$value/" "$file"
     else
         # Check if section already exists
-        if [ ! grep -q "^\[$section\]" "$file" ]; then
+        if [ ! $(grep -q "^\[$section\]" "$file") ]; then
             # Add section at the end
             echo -e "\n[$section]" >>"$file"
         fi