[gnome-color-manager] Check that the EDID data address is not NULL to avoid a segfault

[Richard Hughes <rhughes src gnome org>]

commit 59895b1a509350bd2bcff4184b42d9fb4c469d16
Author: Richard Hughes <richard hughsie com>
Date:   Mon Nov 2 10:31:00 2009 +0000

    Check that the EDID data address is not NULL to avoid a segfault

 src/gcm-edid.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/gcm-edid.c b/src/gcm-edid.c
index c217828..a3cd0d7 100644
--- a/src/gcm-edid.c
+++ b/src/gcm-edid.c
@@ -75,8 +75,9 @@ gcm_edid_parse (GcmEdid *edid, const guint8 *data, GError **error)
 	GcmEdidPrivate *priv = edid->priv;
 
 	g_return_val_if_fail (GCM_IS_EDID (edid), FALSE);
+	g_return_val_if_fail (data != NULL, FALSE);
 
-	/* chekc header */
+	/* check header */
 	if (data[0] != 0x00 || data[1] != 0xff) {
 		if (error != NULL)
 			*error = g_error_new (1, 0, "failed to parse header");