genometools/genometools — pull request #490 by satta (2014-12-04 12:57:15+00:00)
Title: fix segfault on non-existant readset

This PR fixes a segfault with readjoiner when a non-existent readset index name is passed to the overlap tool:
```
$ bin/gt readjoiner overlap -readset nonexist -l 23
# gt readjoiner overlap (version 1.2)
zsh: segmentation fault bin/gt readjoiner overlap -readset nonexist -l 23
```