bugfix

src/nodes/stream/streamNode.cpp

@@ -94,7 +94,7 @@ void StreamNode::work_gpu()
                 // printf("Node %s push data to %s\n", name_.c_str(), output_buffer.first.c_str());
             }
         }
-    }while(packet_size > 0);
+    }while(packet_size > 0 && running_);
 	printf("C++ Demo: %d frames\n", frame_index);
 }