Comment # 13 on bug 982129 from Dr. Werner Fink

(In reply to Manfred Hollstein from comment #12)

Thanks for debugging.  The main problem seems that with the keywords.patch
there are two new functions mutt_label_ref_dec() and mutt_label_ref_inc() in
which there is not checked if the used hash pointer `Labels' is initialized.

https://github.com/neomutt/neomutt/issues/40

Just submitted a fixed version to server:mail/mutt and build has finished with

  mutt-1.6.1-138.1.x86_64.rpm
  mutt-debuginfo-1.6.1-138.1.x86_64.rpm
  mutt-debugsource-1.6.1-138.1.x86_64.rpm

Please test out, thanks a lot!