don't spam xhr's when there is an error or user stops

1 files changed, 1 insertions, 1 deletions

diff --git a/updates.go b/updates.go
index 78db802..e0917cc 100644
--- a/updates.go
+++ b/updates.go
@@ -58,7 +58,7 @@ func addUpdate(pid int, action uint, song *Song) {
 	listeners[pid] = nil
 }
 
-// assumes locked
+// assumes caller has updateLock
 func checkUpdates(pid int, timestamp int64) *Update {
 	pup, _ := headUpdates[pid]
 	for pup != nil {