angular/angular.js — pull request #1142 by xrchen (2012-07-14 04:14:12+00:00)
Title: prevent resulting src="" in html

Hello,

Current implementation of ngSrc may lead to empty src attribute when page is loading.

For example:
```

```
can be temporarily rendered as
```

```
before the ```image``` resource is loaded.

Some browser emits a request to *the current page* when seeing `````` (Firefox13 and IE8 will, Chromium20 won't), which leads to performance problems.

This commit addressed this issue.