hw/m68k/next-cube: Remove superfluous semicolon

Fixes: 956a7811Signed-off-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: NPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: NDr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: NJuan Quintela <quintela@redhat.com>
Message-Id: <20200218094402.26625-7-philmd@redhat.com>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

hw/m68k/next-cube.c

@@ -734,7 +734,7 @@ void next_irq(void *opaque, int number, int level)
     switch (number) {
     /* level 3 - floppy, kbd/mouse, power, ether rx/tx, scsi, clock */
     case NEXT_FD_I:
-        shift = 7;;
+        shift = 7;
         break;
     case NEXT_KBD_I:
         shift = 3;