Don't crash on startup

diff --git a/src/client/client.cpp b/src/client/client.cpp
index c5d4e50..b1b28ee 100644 (file)
--- a/src/client/client.cpp
+++ b/src/client/client.cpp
@@ -534,7 +534,7 @@ void Client::buffersPermanentlyMerged(BufferId bufferId1, BufferId bufferId2) {
 }
 
 void Client::markBufferAsRead(BufferId id) {
-  if(id.isValid())
+  if(bufferSyncer() && id.isValid())
     bufferSyncer()->requestMarkBufferAsRead(id);
 }