avoid crashing at the end of the list

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19217 a95241bf-73f2-0310-859d-f6bbb57e9c96
2006-11-07 00:51:33 +00:00 · 2006-11-07 00:51:33 +00:00 · c74d27255b
commit c74d27255b
parent 73b7614aa0
1 changed files with 3 additions and 2 deletions
--- a/src/system/kernel/device_manager/attributes.c
+++ b/src/system/kernel/device_manager/attributes.c
@ -348,11 +348,12 @@ pnp_get_next_attr(device_node_handle node, device_attr_handle *attr)
 		next = node->attributes;
 	}

-	++next->ref_count;
+	if (next)
+		++next->ref_count;
 	*attr = next;

 	benaphore_unlock(&gNodeLock);
-	return B_OK;
+	return next ? B_OK : B_ENTRY_NOT_FOUND;
 }