fix(compiler): only sets viewDefinition absUrl if the view has either a template or templateUrl

fixes #1326
closes #1327

Author: Matthew Hill

modules/angular2/src/core/compiler/compiler.js

@@ -205,7 +205,7 @@ export class Compiler {
     var templateAbsUrl = null;
     if (isPresent(view.templateUrl)) {
       templateAbsUrl = this._urlResolver.resolve(componentUrl, view.templateUrl);
-    } else {
+    } else if (isPresent(view.template)) {
       // Note: If we have an inline template, we also need to send
       // the url for the component to the renderer so that it
       // is able to resolve urls in stylesheets.

modules/angular2/test/core/compiler/compiler_spec.js

@@ -105,6 +105,14 @@ export function main() {
         });
       }));
 
+      it('should not fill absUrl given no inline template or template url', inject([AsyncTestCompleter], (async) => {
+        cmpUrlMapper.setComponentUrl(MainComponent, '/mainComponent');
+        captureTemplate(new View({template: null, templateUrl: null})).then( (renderTpl) => {
+          expect(renderTpl.absUrl).toBe(null)
+          async.done();
+        });
+      }));
+
       it('should fill absUrl given url template', inject([AsyncTestCompleter], (async) => {
         cmpUrlMapper.setComponentUrl(MainComponent, '/mainComponent');
         captureTemplate(new View({templateUrl: '/someTemplate'})).then( (renderTpl) => {