Bug#914879: Сlosing a tab causes the window to close

[Sergey Alyoshin]

Package: xfce4-terminal
Version: 0.8.7.4-2

If xfce4-terminal window with several tabs is closings warning dialog
"Close all tabs?" is shown. In this dialog "Close Tab" button close
not only currently active tab, as it should be, but all xfce4-terminal
window (same as "Close Window" button).