affs: struct slink_front: Replace 1-element array with flexible array

Replace the deprecated[1] use of a 1-element array in
struct slink_front with a modern flexible array.

No binary differences are present after this conversion.

Link: KSPP#79 [1]
Reviewed-by: Gustavo A. R. Silva <[email protected]>
Signed-off-by: Kees Cook <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>

fs/affs/amigaffs.h

@@ -108,7 +108,7 @@ struct slink_front
 	__be32 key;
 	__be32 spare1[3];
 	__be32 checksum;
-	u8 symname[1];	/* depends on block size */
+	u8 symname[];	/* depends on block size */
 };
 
 struct affs_data_head