Add couple consts to operators
diff --git a/src/hb-open-type-private.hh b/src/hb-open-type-private.hh
index 38d3108..74b1e2e 100644
--- a/src/hb-open-type-private.hh
+++ b/src/hb-open-type-private.hh
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2007,2008,2009 Red Hat, Inc.
+ * Copyright (C) 2007,2008,2009,2010 Red Hat, Inc.
*
* This is part of HarfBuzz, an OpenType Layout engine library.
*
@@ -347,7 +347,7 @@
{ \
inline NAME& set (TYPE i) { (TYPE&) v = BIG_ENDIAN (i); return *this; } \
inline operator TYPE(void) const { return BIG_ENDIAN ((TYPE&) v); } \
- inline bool operator== (NAME o) const { return (TYPE&) v == (TYPE&) o.v; } \
+ inline bool operator== (const NAME &o) const { return (TYPE&) v == (TYPE&) o.v; } \
inline bool sanitize (SANITIZE_ARG_DEF) { \
TRACE_SANITIZE (); \
return SANITIZE_SELF (); \
@@ -362,7 +362,7 @@
static inline unsigned int get_size () { return BYTES; } \
inline NAME& set (TYPE i) { BIG_ENDIAN##_put_unaligned(v, i); return *this; } \
inline operator TYPE(void) const { return BIG_ENDIAN##_get_unaligned (v); } \
- inline bool operator== (NAME o) const { return BIG_ENDIAN##_cmp_unaligned (v, o.v); } \
+ inline bool operator== (const NAME &o) const { return BIG_ENDIAN##_cmp_unaligned (v, o.v); } \
inline bool sanitize (SANITIZE_ARG_DEF) { \
TRACE_SANITIZE (); \
return SANITIZE_SELF (); \
