befs: fix up missed follow_link declaration change

We'd updated the prototype and the return value, but not the function
declaration itself.
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index abf950e..e0a6025 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -461,7 +461,7 @@
  * The data stream become link name. Unless the LONG_SYMLINK
  * flag is set.
  */
-static int
+static void *
 befs_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);