* Wait for all the awaited computations to be over.
*/
-gint background_ready(void *hook_data, void *call_data)
+static gint background_ready(void *hook_data, void *call_data)
{
ControlFlowData *control_flow_data = (ControlFlowData *)hook_data;
LttvTrace *trace = (LttvTrace*)call_data;