small change in generation of http redirect page

gosher

@@ -160,6 +160,9 @@ serve_redirect(){
 	Click to be redirected to: <a href="$url">$url</a>
   </body>
 EOF
+	exec 1>&-
+	exec 2>&-
+	exit 0
 
 }
 
@@ -178,7 +181,7 @@ selector=$(echo $selector | sed -r 's:\$.*::g;s:\r::g' )
 }
 
 case $selector in
-	/URL:*)
+	URL:*)
 		url=$(echo $selector | cut -d ":" -f 2-)
 		serve_redirect $url
         ;;
@@ -205,6 +208,7 @@ case $selector in
 	*)
 		[ -f "${GOPHERDIR}/gophermap" ] && serve_selector "${GOPHERDIR}/gophermap"
 		[ -f "${GOPHERDIR}/index.gph" ] && serve_index "${GOPHERDIR}/index.gph"
+		echo "got invalid selector: \"$selector\"" >&2
 		invalid_selector "/"
 	;;
 esac