Use distinct variabled

Signed-off-by: Christian König <ckoenig@posteo.de>

advanced/Scripts/query.sh

@@ -57,12 +57,12 @@ options=$(sed -E 's/ ?-(all|exact) ?//g' <<< "${options}")
 case "${options}" in
     ""             ) str="No domain specified";;
     *" "*          ) str="Unknown query option specified";;
-    *[![:ascii:]]* ) domainQuery=$(idn2 "${options}");;
-    *              ) domainQuery="${options}";;
+    *[![:ascii:]]* ) rawDomainQuery=$(idn2 "${options}");;
+    *              ) rawDomainQuery="${options}";;
 esac
 
 # convert the domain to lowercase
-domainQuery=$(echo "${domainQuery}" | tr '[:upper:]' '[:lower:]')
+domainQuery=$(echo "${rawDomainQuery}" | tr '[:upper:]' '[:lower:]')
 
 if [[ -n "${str:-}" ]]; then
     echo -e "${str}${COL_NC}\\nTry 'pihole -q --help' for more information."
@@ -82,7 +82,7 @@ scanList(){
 
     # /dev/null forces filename to be printed when only one list has been generated
     case "${list_type}" in
-        "exact" ) grep -i -E -l "(^|(?<!#)\\s)${esc_domain}($|\\s|#)" ${lists} /dev/null 2>/dev/null;;
+        "exact" ) grep -i -E -l "(^|(?<!#)\\s)${esc_domain}($|\\s|#)" "${lists}" /dev/null 2>/dev/null;;
         # Iterate through each regexp and check whether it matches the domainQuery
         # If it does, print the matching regexp and continue looping
         # Input 1 - regexps | Input 2 - domainQuery
@@ -92,7 +92,7 @@ scanList(){
                     printf "%b\n" "${list}";
                 fi
             done;;
-        *       ) grep -i "${esc_domain}" ${lists} /dev/null 2>/dev/null;;
+        *       ) grep -i "${esc_domain}" "${lists}" /dev/null 2>/dev/null;;
     esac
 }