gEDA-dev: Patch to fix file-choosers after closing save dialog with "Escape"

[Peter Clifton]

Attached is a patch against CVS HEAD (before my other two patches to
x_fileselect.c), which fixes a bug where the file-choosers fail to work
after closing a file-saveas chooser with the "Escape" key.

When you close a file-chooser with "Escape", the
GTK_RESPONSE_DELETE_EVENT signal was being sent (which is odd, since
from reading the GTK+ sourcecode, I expected it to be sending the
default GTK_RESPONSE_CANCEL event). This wasn't caught in the response
code switch statement.

I've added a default catch to the switch statement which handles the
saveas choosers, so that any unidentified return code will act as
"Cancel". I left the "case GTK_RESPONSE_CANCEL:" and added a "case
GTK_RESPONSE_DELETE_EVENT:" for clarity.

The file-open chooser catches unknown response codes with an "else".

Regards

Peter Clifton

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