Description:
If you click the cancel button on a dialog, you would expect that all of your proposed changes should be forgotten and the previous settings returned.  Unfortunately, this does not appear to be the case.  

For example, if you select Brochure in the print dialog and then cancel, that setting persists and will remain selected/activated until you change it again.

Steps to reproduce:
1. File -> Print
2. Select "Page Layout" tab
3. Click "Brochure" radio button
4. Click Cancel button to exit print dialog

Expected:
Since we canceled the print dialog, no settings should be remembered.  If we view the print dialog again, the brochure setting should still be on single page.

Actual:
Brochure is still selected and applied.

Notes:
I've tested/confirmed this bug under the following versions/environments:
LibreOffice 4.2.0.4 under 64bit RHEL6
OpenOffice 3.2.1 under 64bit RHEL6
LibreOffice 4.3.0.1 RC under 32bit Fedora17
LibreOffice 4.2.5.2 under 32bit Fedora 17
I even tried to bibisect under 64bit Arch Linux, but it existed in the oldest version (3.5.0).

Though my example shows the bug using the brochure feature, a quick test revealed that the other settings in the Linux print dialog are also erroneously applied/saved after a cancel:
"LibreOffice Writer" tab -> "Page background"
"LibreOffice Writer" tab -> "Pictures and other graphic objects"
"LibreOffice Writer" tab -> "Hidden text"
"LibreOffice Writer" tab -> "Text placeholders"
"LibreOffice Writer" tab -> "Form Controls"
"LibreOffice Writer" tab -> "Print text in black"
"LibreOffice Writer" tab -> "Print automatically inserted blank pages"
"Page Layout" tab -> "Page sides"
"Options" -> "Use only paper tray from printer preference"