Restrict DualUse Layer keys to 8 max, too

Again, for program space saving reasons, restrict DualUse layer keys to
8 max.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

src/Kaleidoscope-Ranges.h

@@ -32,7 +32,7 @@ namespace KaleidoscopePlugins {
       DUM_FIRST   = DU_FIRST,
       DUM_LAST    = DUM_FIRST + (8 << 8),
       DUL_FIRST,
-      DUL_LAST    = DUL_FIRST + (24 << 8),
+      DUL_LAST    = DUL_FIRST + (8 << 8),
       DU_LAST     = DUL_LAST,
       TD_FIRST,
       TD_LAST     = TD_FIRST + 15,