correct syntax errors in core scripts

graph.ce

@@ -143,6 +143,9 @@ arrfor(roots, function(root) {
 })
 
 // Output based on format
+var children = null
+var j = 0
+var output = null
 if (format == 'tree') {
   function print_tree(locator, prefix, is_last, visited) {
     var node = null
@@ -178,8 +181,6 @@ if (format == 'tree') {
     }
   }
 
-  var children = null
-  var j = 0
   for (i = 0; i < length(roots); i++) {
     log.console(roots[i])
 
@@ -230,7 +231,7 @@ if (format == 'tree') {
   log.console("}")
 
 } else if (format == 'json') {
-  var output = {
+  output = {
     nodes: [],
     edges: []
   }