[PATCH weston] xwm: don't try to remove nonexistent frame

[Tiago Vignatti]

On 06/01/2012 06:29 PM, Kristian Høgsberg wrote:
> When does this happen?

with any X window that Weston maps as transient surface. I tested myself 
with those that pops up in gtk3-demo-application and Firefox.

   Tiago