Mark more unsized array's as arrayZ

src/hb-aat-layout-kerx-table.hh

diff --git a/src/hb-aat-layout-kerx-table.hh b/src/hb-aat-layout-kerx-table.hh
index 52637e6..cc03d62 100644
--- a/src/hb-aat-layout-kerx-table.hh
+++ b/src/hb-aat-layout-kerx-table.hh
@@ -334,7 +334,7 @@
   HBUINT16		version;
   HBUINT16		padding;
   HBUINT32		nTables;
-/*KerxTable tables[VAR];*/
+/*KerxTable tablesZ[VAR]; XXX ArrayOf??? */
 /*SubtableGlyphCoverageArray coverage_array;*/
   public:
   DEFINE_SIZE_STATIC (8);