Bug#805823: openms: Fails to build with GSL 2 (duplicates #804496)

[Sebastiaan Couwenberg]

severity 805823 serious
tags 805823 + sid, stretch
tags 804496 + upstream
reassign 804496 src:openms
merge 805823 804496
thanks

Merging my bugreport into Dirk's earlier bugreport, it's pretty much the
same issue.

Kind Regards,

Bas