revert changes in acl_event

Author: sherry-yuan

src/acl_event.cpp

@@ -812,6 +812,7 @@ cl_int acl_create_event(cl_command_queue command_queue, cl_uint num_events,
 #endif
 
   context = command_queue->context;
+
   event = l_get_unused_event(context);
   if (event == 0) {
     acl_context_callback(context, "Could not allocate an event or command");
@@ -860,6 +861,7 @@ cl_int acl_create_event(cl_command_queue command_queue, cl_uint num_events,
           events[i]->depend_on_me.pop_back();
         }
       }
+
       // Return event back to free pool
       event->depend_on.clear();
       l_return_event_to_free_pool(event);
@@ -869,6 +871,7 @@ cl_int acl_create_event(cl_command_queue command_queue, cl_uint num_events,
 
   if (event) {
     // Success!
+
     // Normally, the command info union usage is determined only
     // by the command type.  But in the case of CL_COMMAND_MAP_BUFFER
     // and CL_COMMAND_UNMAP_MEM_OBJECT, we need this extra bit to know
@@ -916,6 +919,7 @@ cl_int acl_create_event(cl_command_queue command_queue, cl_uint num_events,
       printf("  Notify: Event [%d] has been created:\n", event->id);
       acl_dump_event(event);
     }
+
     acl_track_object(ACL_OBJ_EVENT, event);
   } else {
     acl_context_callback(context, "Could not allocate an event");