[SYCL][NFC] Fix a warning about uninitialized struct members (intel#5610)

Author: bader

sycl/unittests/program_manager/SubDevices.cpp

@@ -137,8 +137,8 @@ TEST(SubDevices, DISABLED_BuildProgramForSubdevices) {
 
   // Create device binary description structures for getBuiltPIProgram API.
   auto devBin = Img.convertToNativeType();
-  pi_device_binaries_struct devBinStruct{PI_DEVICE_BINARIES_VERSION, 1,
-                                         &devBin};
+  pi_device_binaries_struct devBinStruct{PI_DEVICE_BINARIES_VERSION, 1, &devBin,
+                                         nullptr, nullptr};
   sycl::detail::ProgramManager::getInstance().addImages(&devBinStruct);
 
   // Build program via getBuiltPIProgram API