Make FixedVersion a template
diff --git a/src/hb-open-file-private.hh b/src/hb-open-file-private.hh
index 152230a..5357ddc 100644
--- a/src/hb-open-file-private.hh
+++ b/src/hb-open-file-private.hh
@@ -140,7 +140,7 @@
 
   protected:
   Tag		ttcTag;		/* TrueType Collection ID string: 'ttcf' */
-  FixedVersion	version;	/* Version of the TTC Header (1.0),
+  FixedVersion<>version;	/* Version of the TTC Header (1.0),
 				 * 0x00010000u */
   ArrayOf<OffsetTo<OffsetTable, ULONG>, ULONG>
 		table;		/* Array of offsets to the OffsetTable for each font
@@ -187,7 +187,7 @@
   union {
   struct {
   Tag		ttcTag;		/* TrueType Collection ID string: 'ttcf' */
-  FixedVersion	version;	/* Version of the TTC Header (1.0 or 2.0),
+  FixedVersion<>version;	/* Version of the TTC Header (1.0 or 2.0),
 				 * 0x00010000u or 0x00020000u */
   }			header;
   TTCHeaderVersion1	version1;