#1 Selected game

[Luis Marques]

KMameRun remembers what game was selected on quit so
that it can be again selected on startup.

There is a glitch in the code that stores the value.
The ListView returns a null pointer if the list is
empty. The list might be empty if, for instance, the
MAME command is improperly set.

Correction attached.

[Luis Marques]

Check for empty list before accessing the selected item