Fix crash when description points with identifier to a non-exisiting capabilities file.
Fix crash when description points with identifier to a non-exisiting
capabilities file.

This solves only an unwanted double-free - engine just get stuck now.



git-svn-id: e31799a7ad59d6ea355ca047c69e0aee8a59fcd3@2670 53f5c7ee-bee3-0310-bbc5-ea0e15fffd5e

ianmartin/opensync,ianmartin/opensync