format-patch previously didn't generate a newline after a subject. This 
caused the diffstat to not be displayed in messages without a blank line 
and the first blank line to be eaten in messages with a blank line.

This patch inserts a newline in two places - once in the loop to 
separate the subject part of the commit message from the body part of 
the commit message and another after the loop to counteract the eating 
of whitespace at the end of the message.
---
  commit.c |   14 ++++++++++++--
  1 files changed, 12 insertions(+), 2 deletions(-)