fix(mail): default cj/custom-keymap so the file byte-compiles standalone

cj/custom-keymap is defined in keybindings.el, which init.el loads
before mail-config.el. The use-package org-msg :preface block calls
keymap-set on it, and use-package wraps :preface in eval-and-compile.
So byte-compiling mail-config.el on its own tries to call keymap-set
when cj/custom-keymap is still void.

Wrapping a defvar with a make-sparse-keymap default in eval-and-compile
gives the symbol a value during compilation. At runtime keybindings.el
has already populated the real keymap, so defvar does nothing.

0 files changed, 0 insertions, 0 deletions