Implement handler for cancel button of Save As dialog

When an user opened the "Save as" dialog and pressed the
cancel button a null string was returned. Therefore the
file_save_as function returned an error which was lately
shown when the file_save function was called.
Now the function checks if the cancel/exit button was
pressed and returns.

Fixes #844

Reported-by: longjohnsilver
Signed-off-by: Claudiu Olteanu <olteanu.claudiu@ymail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

0 files changed, 0 insertions, 0 deletions