[lasem] properties: add parenthesis in LSM_PROPERTY_ID_TO_OFFSET definition.

[Emmanuel Pacaud <emmanuel src gnome org>]

commit 290263e140c5c2bd3b4b866fe70e166dbf95982f
Author: Emmanuel Pacaud <emmanuel gnome org>
Date:   Fri Oct 22 16:35:38 2010 +0200

    properties: add parenthesis in LSM_PROPERTY_ID_TO_OFFSET definition.

 src/lsmproperties.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/lsmproperties.h b/src/lsmproperties.h
index 369b56b..f3c9b73 100644
--- a/src/lsmproperties.h
+++ b/src/lsmproperties.h
@@ -28,7 +28,7 @@
 G_BEGIN_DECLS
 
 #define LSM_PROPERTY_OFFSET_TO_ID(structure,member) offsetof (structure, member) / sizeof (void *)
-#define LSM_PROPERTY_ID_TO_OFFSET(id) id * sizeof (void *)
+#define LSM_PROPERTY_ID_TO_OFFSET(id) ((id) * sizeof (void *))
 
 typedef struct {
 	guint16	id;