Fixed handling of include attribute

taglibs/core/core-transformer.js

@@ -164,12 +164,17 @@ var coreAttrHandlers = [
         'include', function(attr, node, el) {
             var context = this.context;
 
+            if (typeof attr.argument === 'string') {
                 if (attr.argument) {
                     var includeNode = context.createNodeForEl('include', null, attr.argument);
                     node.appendChild(includeNode);                    
                 } else {
                     context.addError(el, 'The include attribute must have an argument. For example: include("./target.marko") or include(data.renderBody)');
                 }
+
+            } else {
+                return false;
+            }
         }
     ]
 ];

test/autotests/render/include-attr-no-arg/expected.html

@@ -0,0 +1 @@
+<div include="123"></div>

test/autotests/render/include-attr-no-arg/template.marko

@@ -0,0 +1 @@
+<div include="123"/>

test/autotests/render/include-attr-no-arg/test.js

@@ -0,0 +1 @@
+exports.templateData = {};