Move dev sync to end of upload

applications/reconstruct/src/voxel_scene.cpp

@@ -125,12 +125,13 @@ int SceneRep::upload() {
 		_alloc(cam.gpu, cam.params, cv::cuda::StreamAccessor::getStream(cam.stream));
 	}
 
+	// Must have finished all allocations and rendering before next integration
+	cudaSafeCall(cudaDeviceSynchronize());
+
 	return active;
 }
 
 void SceneRep::integrate() {
-	cudaSafeCall(cudaDeviceSynchronize());
-
 	for (size_t i=0; i<cameras_.size(); ++i) {
 		auto &cam = cameras_[i];