Fix textarea scrolling for list editing

lib/scripts/edit.js

@@ -166,6 +166,7 @@ function keyHandler(e){
         // keep current indention for lists and code
         var match = search.match(/(\n  +([\*-] ?)?)/);
         if(match){
+            var scroll = field.scrollHeight;
             var match2 = search.match(/^\n  +[\*-]\s*$/);
             // Cancel list if the last item is empty (i. e. two times enter)
             if (match2 && field.value.substr(selection.start).match(/^($|\n)/)) {
@@ -177,7 +178,6 @@ function keyHandler(e){
             } else {
                 insertAtCarret(field.id,match[1]);
             }
-            var scroll = field.scrollHeight;
             field.scrollTop += (field.scrollHeight - scroll);
             e.preventDefault(); // prevent enter key
             return false;