Fix parser's use of underscore's template method to work with modern use of it.

lib/carto/parser.js

@@ -114,8 +114,9 @@ carto.Parser = function Parser(env) {
     // - `index`: Char. index where the error occurred.
     function makeError(err) {
         var einput;
+        var errorTemplate;
 
-        _(err).defaults({
+        _.defaults(err, {
             index: furthest,
             filename: env.filename,
             message: 'Parse error.',
@@ -133,8 +134,8 @@ carto.Parser = function Parser(env) {
         for (var n = err.index; n >= 0 && einput.charAt(n) !== '\n'; n--) {
             err.column++;
         }
-
-        return new Error(_('<%=filename%>:<%=line%>:<%=column%> <%=message%>').template(err));
+        errorTemplate = _.template('<%=filename%>:<%=line%>:<%=column%> <%=message%>');
+        return new Error(errorTemplate(err));
     }
 
     this.env = env = env || {};