Fix global-git-commit-mode on 1st start

lisp/init-git.el

 (require-package 'git-messenger) ;; Though see also vc-annotate's "n" & "p" bindings
 (require-package 'git-timemachine)
 
-;; http://emacs.stackexchange.com/a/17733
-(global-git-commit-mode)
-
 (when (maybe-require-package 'magit)
   (setq-default
    magit-process-popup-time 10
 (global-set-key (kbd "C-x v p") #'git-messenger:popup-message)
 
 
+;; http://emacs.stackexchange.com/a/17733
+(global-git-commit-mode)
+
 (provide 'init-git)