data layer pthread function fix

diff --git a/src/caffe/layers/data_layer.cpp b/src/caffe/layers/data_layer.cpp
index 7993a43..c44fbd6 100644 (file)
--- a/src/caffe/layers/data_layer.cpp
+++ b/src/caffe/layers/data_layer.cpp
@@ -91,6 +91,8 @@ void* DataLayerPrefetch(void* layer_pointer) {
       layer->iter_->SeekToFirst();
     }
   }
+
+  return (void*)NULL;
 }