Patch for /freetype/freetype.go

```
When p.X is less than zero, the position of first letter of s is incorrect!
```

Original issue reported on code.google.com by `goo...@iamje.com` on 30 Nov 2013 at 7:47

Attachments:
- [freetype.go.patch](https://storage.googleapis.com/google-code-attachments/freetype-go/issue-9/comment-0/freetype.go.patch)
