Related Posts: decode ellipsis at the end of a long excerpt

![screen shot 2014-11-08 at 5 00 59 pm](https://cloud.githubusercontent.com/assets/426388/4964687/d5cd94f8-6768-11e4-9a5c-413f847cd1fc.png)

Reported here:
https://wordpress.org/support/topic/related-posts-hellip-typo-on-hover?replies=3

@xyu My patch works, but I wonder if there would be a better way of doing it, and if my patch could cause things to break, somehow?