Bluetooth: Fix using NULL inquiry entry

If entry wasn't found in the hci_inquiry_cache_lookup_resolve do not
resolve the name.This will fix a kernel crash when trying to use NULL
pointer.

Cc: stable@vger.kernel.org
Signed-off-by: Ram Malovany <ramm@ti.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

net/bluetooth/hci_event.c

@@ -1365,6 +1365,9 @@ static bool hci_resolve_next_name(struct hci_dev *hdev)
 		return false;
 
 	e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
+	if (!e)
+		return false;
+
 	if (hci_resolve_name(hdev, e) == 0) {
 		e->name_state = NAME_PENDING;
 		return true;