Kernel bundle tests warning: non-void function does not return a value in all control paths

[AlexeySachkov]

The following function triggers warning during CTS build:

SYCL-CTS/tests/kernel_bundle/use_kernel_bundle.h

Lines 102 to 115 in 9691bc0

	template <typename KernelT>
	inline sycl::kernel_bundle<sycl::bundle_state::executable> get_non_empty_bundle(
	const sycl::context &ctx) {
	auto kernel_id = sycl::get_kernel_id<KernelT>();
	try {
	auto k_bundle = sycl::get_kernel_bundle<sycl::bundle_state::executable>(
	ctx, ctx.get_devices(), {kernel_id});
	return k_bundle;
	} catch (const sycl::exception &e) {
	if (sycl::errc::invalid == e.code())
	SKIP(
	"Test skipped because no device is compatible with requested kernel");
	}
	}

Example of build log:

In file included from ../tests/kernel_bundle/use_kernel_bundle_call_set_spec_const_after_use_kb_no_second_queue.cpp:13:
../tests/kernel_bundle/use_kernel_bundle.h:115:1: warning: non-void function does not return a value in all control paths [-Wreturn-type]
  115 | }
      | ^
../tests/kernel_bundle/use_kernel_bundle_call_set_spec_const_after_use_kb_no_second_queue.cpp:73:9: note: in instantiation of function template specialization 'sycl_cts::tests::use_kernel_bundle::get_non_empty_bundle<sycl_cts::test
s::use_kernel_bundle::kernel_for_kernel_bundle>' requested here
   73 |         get_non_empty_bundle<kernel_for_kernel_bundle>(ctx);
      |         ^
1 warning generated.
[426/1195] Building CXX object tests/kernel_bundle/CMakeFiles/test_kernel_bundle_objects.dir/use_kernel_bundle_call_set_spec_const_after_use_kb_with_second_queue.cpp.o
In file included from ../tests/kernel_bundle/use_kernel_bundle_call_set_spec_const_after_use_kb_with_second_queue.cpp:13:
../tests/kernel_bundle/use_kernel_bundle.h:115:1: warning: non-void function does not return a value in all control paths [-Wreturn-type]
  115 | }
      | ^
../tests/kernel_bundle/use_kernel_bundle_call_set_spec_const_after_use_kb_with_second_queue.cpp:76:9: note: in instantiation of function template specialization 'sycl_cts::tests::use_kernel_bundle::get_non_empty_bundle<sycl_cts::te
sts::use_kernel_bundle::kernel_for_kernel_bundle>' requested here
   76 |         get_non_empty_bundle<kernel_for_kernel_bundle>(ctx);
      |         ^
1 warning generated.