Suggestion to add button "Cancel" to dialog about saving

[Andrei Buneyeu]

Binary package hint: gthumb

After I`ve done some actions with a picture, I wanted to close gThumb.
gThumb asked me if I want to save my picture. It give me two variants - "save as" and "close without saving". Habitually, I wanted to close this dialog and save picture from main window (i don`t like to save my documents immediately before closing), but gThumb couldn`t help me with it!
I wish that button "Cancel" will be added to dialog showed when close gThumb with unsaved changes. I think, it`s not difficult.

Sorry for my English.

gThumb 3:2.10.10-0ubuntu1.1,
Ubuntu 8.10

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/gthumb
NonfreeKernelModules: nvidia
Package: gthumb 3:2.10.10-0ubuntu1.1 [modified: usr/bin/gthumb usr/lib/gthumb/libgthumb.so]
ProcEnviron:
 PATH=/home/username/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
SourcePackage: gthumb
Uname: Linux 2.6.27-12-generic i686