Fixed return value & menu item name in the QT Debugger's Image menu. (nw)



git-svn-id: svn://dspnet.fr/mame/trunk@23303 749742ba-7341-0410-aadc-df50b521781e
Oops.  Slot names aren't unique.  This is better anyway. (nw)



git-svn-id: svn://dspnet.fr/mame/trunk@23304 749742ba-7341-0410-aadc-df50b521781e