polish a bit

rss/pig_fetch

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-curl "$1" -o -
+curl -so - -- "$1"

rss/youtube

@@ -14,8 +14,7 @@ feedurl(){
 
 case "$1" in
 subscribe)
-	url="$(feedurl "$(id "$2")")"
-	pig_stow "$url"
+	pig_stow "$(feedurl "$(id "$2")")"
 	;;
 refresh)
 	pig_feed