#7 radTimerListDebug declared to return int but doesn't return

[Ryan Carsten Schmidt]

In radlib 2.12.0 radTimerListDebug is declared to return an int but doesn't actually return anything:

../src/radtimers.c:390:1: warning: non-void function does not return a value [-Wreturn-type]
}
^
1 warning generated.