Fix spacemacs|do-after-display-system-init
Fix spacemacs|do-after-display-system-init

Checking for system-type is not enough accurate, it broke when using
an X server under OS X because system-type is darwin but the
initialized display is x-initialized not ns-initialized.

tsonntag/dotemacs,tsonntag/dotemacs,tsonntag/dotemacs,tsonntag/dotemacs