Check whether the focus in on the OK/Hide button when ENTER is pressed; only close the dialog if the focus is there.
If the focus is on the list control, execute the diff (default action of the context menu).
This fixes issue #77: Pressing "enter" unexpectedly closes "Commit Monitor" application window
Authored by: tortoisesvn 2008-08-20
Parent: [r311]
Child: [r313]
