[brasero] trivial: Fix a wrong header guard

[David King <davidk src gnome org>]

commit 26e10427e385fe51788bb4a944d11a926ddfe9e3
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Sat Jun 6 21:47:51 2015 +0800

    trivial: Fix a wrong header guard
    
    https://gitlab.gnome.org/GNOME/brasero/-/issues/287
    https://bugzilla.gnome.org/show_bug.cgi?id=750488

 plugins/checksum/burn-volume-read.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/plugins/checksum/burn-volume-read.h b/plugins/checksum/burn-volume-read.h
index f64e4c1c..23a4cfa5 100644
--- a/plugins/checksum/burn-volume-read.h
+++ b/plugins/checksum/burn-volume-read.h
@@ -28,7 +28,7 @@
  *     Boston, MA  02110-1301, USA.
  */
  
-#ifndef _BRASERO_MEDIUM_HANDLE_H
+#ifndef BRASERO_MEDIUM_HANDLE_H
 #define BRASERO_MEDIUM_HANDLE_H
 
 #include <glib.h>