befs: avoid dereferencing dentry twice

No need to dereference dentry twice to get the name when we already have
it stored in a local variable.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index cf8f920..62889eb 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -179,7 +179,7 @@
 		kfree(utfname);
 
 	} else {
-		ret = befs_btree_find(sb, ds, dentry->d_name.name, &offset);
+		ret = befs_btree_find(sb, ds, name, &offset);
 	}
 
 	if (ret == BEFS_BT_NOT_FOUND) {