[patch] kdbus: checking for IS_ERR() instead of NULL

[Dan Carpenter]

"e->user" is never assigned an ERR_PTR().  It can be set to NULL so I
assume that is what is intended here.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/ipc/kdbus/queue.c b/ipc/kdbus/queue.c
index a449464..21fce62 100644
--- a/ipc/kdbus/queue.c
+++ b/ipc/kdbus/queue.c
@@ -637,7 +637,7 @@ int kdbus_queue_entry_move(struct kdbus_queue_entry *e,
 	lockdep_assert_held(&src->lock);
 	lockdep_assert_held(&dst->lock);
 
-	if (WARN_ON(IS_ERR(e->user)) || WARN_ON(list_empty(&e->entry)))
+	if (WARN_ON(!e->user) || WARN_ON(list_empty(&e->entry)))
 		return -EINVAL;
 	if (src == dst)
 		return 0;
--
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