Make select-sound-output.sh work on both x and wayland

select-sound-output.sh

@@ -12,8 +12,11 @@ for ((i = 1; i <= "${#ids}"; ++i)); do
     fi
     query_string+="${ids[${i}]}: ${descs[${i}]} (${names[${i}]})\n"
 done
+[[ -v WAYLAND_DISPLAY ]] \
+    && prompt_cmd=("fuzzel" "-dp" "${default_id}> ") \
+    || prompt_cmd=("dmenu" "-p" "${default_id}:")
 local choice
-choice="$(echo "${query_string%"\n"}" | fuzzel -dp "${default_id}> ")"
+choice="$(echo "${query_string%"\n"}" | ${prompt_cmd})"
 if (( "${?}" != 0 )); then
     exit
 fi