In ob-core.el, in `org-babel-check-evaluate', when the code block is missing a name, the formatted message is missing a space. Compare:
Evaluation of this python code-block (read-future) is disabled. Evaluation of this python code-blockis disabled. Emacs : GNU Emacs 25.1.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.20.9) of 2016-09-18 Package: Org mode version 9.0 (9.0-elpa @ /home/mir/.emacs.d/elpa/org-20161102/)
