[PATCH] Fix ESC key handling in Save dialog.

[Sergey Starosek]

Closing unsaved dive raises Save dialog with Yes/No/Cancel buttons.
Pressing ESC dismisses dialog without saving changes.

This commit adds GTK_RESPONSE_DELETE_EVENT response code check in order
to fix that behavior.

Reported-by: Jan Schubert <Jan.Schubert at GMX.li>
Signed-off-by: Sergey Starosek <sergey.starosek at gmail.com>
---
 gtk-gui.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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