np-subsonic: fix missing pw generator

.config/zsh/functions/np-subsonic

@@ -9,12 +9,19 @@ while IFS=\n read -r line; do
     cfg+=${line}
 done < ${XDG_CONFIG_HOME:-~/.config}/np-subsonic.cfg
 
+local pwgen_cmd="print ${RANDOM}"
+# if type pwgen >& -; then
+#     pwgen_cmd="pwgen 20 1"
+# elif type pwqgen >& -; then
+#     pwgen_cmd=pwqgen
+# fi
+
 local host=${cfg[1]}
 local api_version=1.16.1
 local useragent=np-subsonic
 local user=${cfg[2]}
 local password=${cfg[3]}
-local salt=$(pwgen 20 1)
+local salt=$(eval ${pwgen_cmd})
 local token=$(print -n "${password}${salt}" | md5sum | cut -d' ' -f1)
 
 local response=$(curl --silent \