disabled utility code in gpu tests when WITH_CUDA=false

modules/gpu/test/test_nvidia.cpp

@@ -41,13 +41,13 @@
 
 #include "test_precomp.hpp"
 
-OutputLevel nvidiaTestOutputLevel = OutputLevelCompact;
-
 #ifdef HAVE_CUDA
 
 using namespace cvtest;
 using namespace testing;
 
+OutputLevel nvidiaTestOutputLevel = OutputLevelCompact;
+
 struct NVidiaTest : TestWithParam<cv::gpu::DeviceInfo>
 {
     cv::gpu::DeviceInfo devInfo;