Added missing ASSERT_NE.

am: ac7ac525b2

Change-Id: I1cd8565bd756a6f518af0711294405f6f0b63aea

neuralnetworks/1.2/vts/functional/CompilationCachingTests.cpp

@@ -86,6 +86,7 @@ class CompilationCachingTest : public NeuralnetworksHidlTest {
   protected:
     void SetUp() override {
         NeuralnetworksHidlTest::SetUp();
+        ASSERT_NE(device.get(), nullptr);
 
         // Create cache directory.
         char cacheDirTemp[] = "/data/local/tmp/TestCompilationCachingXXXXXX";