[C++ patch] one more missed mark_used

[Gabriel Dos Reis]

Andrew Pinski <pinskia@physics.uc.edu> writes:

[...]

| > Nit:  Use the canonical form for date, e.g. 2003-08-14.
| 
| Stupid Nit: emacs is what is causing this.

I too use Emacs to add ChangeLog entries :-)

-- Gaby