Bugfix with blastdbcmd in BLAST 2.2.22 ---
Bugfix with blastdbcmd in BLAST 2.2.22
---

* blastdbcmd sometimes outputs an empty line, which led to a crash
  see: https://github.com/yannickwurm/sequenceserver/issues/50
  Fixed.

Signed-off-by: Yannick Wurm <6ad98497b404e7a57771fc5f321983528dd76db9@unil.ch>

elsiklab/sequenceserver,jasminZ/sequenceserver,lepbase/lepbase-sequenceserver,deepakunni3/sequenceserver,yeban/sequenceserver,yeban/sequenceserver,deepakunni3/sequenceserver,lepbase/lepbase-sequenceserver,vivekiitkgp/sequenceserver,vivekiitkgp/sequenceserver,vivekiitkgp/sequenceserver,yeban/sequenceserver,elsiklab/sequenceserver,lepbase/lepbase-sequenceserver,IsmailM/sequenceserver,aldermossy/sequenceserver,yeban/sequenceserver,jasminZ/sequenceserver,IsmailM/sequenceserver,aldermossy/sequenceserver,jasminZ/sequenceserver,aldermossy/sequenceserver,elsiklab/sequenceserver,IsmailM/sequenceserver,aldermossy/sequenceserver,deepakunni3/sequenceserver