made Conveyor::wait_for_empty_queue() actually return

diff --git a/src/modules/robot/Conveyor.cpp b/src/modules/robot/Conveyor.cpp
index 08eebc5..3a699e1 100644 (file)
--- a/src/modules/robot/Conveyor.cpp
+++ b/src/modules/robot/Conveyor.cpp
@@ -129,7 +129,7 @@ void Conveyor::wait_for_queue(int free_blocks)
 }
 
 void Conveyor::wait_for_empty_queue(){
-    while( this->queue.size() >= 0){
+    while( this->queue.size() > 0){
         this->kernel->call_event(ON_IDLE);
     }
 }