staging: lustre: fix coding style issue: missing space after 'if'

Coding style issue reported by checkpatch.pl
Signed-off-by: Junien Fridrick <linux.kernel@junien.fridrick.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/llite/remote_perm.c

@@ -100,7 +100,7 @@ void free_rmtperm_hash(struct hlist_head *hash)
 	struct ll_remote_perm *lrp;
 	struct hlist_node *next;
 
-	if(!hash)
+	if (!hash)
 		return;
 
 	for (i = 0; i < REMOTE_PERM_HASHSIZE; i++)