Parse error with comment

Hi , the plugin works fine except it is sensitive to smarty comment.

**Example with error :** 
``` 
{switch $message}
{********* Success *********}
{case 'add' break}
    {** Add **}
{/switch}
```

**Example without error :** 

```
{switch $message}
{case 'add' break}
    {** Add **}
{/switch}

```
Tested with smarty 3.1.31
