[TEST] TreeTest.cpp - Add a comma to avoid build error with -werror

[skan]

Summary

The macro INSTANTIATE_TEST_CASE_P is defined as

\# define INSTANTIATE_TEST_CASE_P(prefix, test_case_name, generator, ...) \
...

If we build the test case with -werror, we will get an error like

error: ISO C++11 requires at least one argument for the "..." in a
variadic macro

testing::ValuesIn(TestClangConfig::allConfigs()));
                                                ^

This patch fixes that.

[skan]

Related revision: D80822

clang/unittests/Tooling/Syntax/TreeTest.cpp

TEST_P(SyntaxTreeTest, SynthesizedNodes) {
   auto *S = syntax::createEmptyStatement(*Arena);
   ASSERT_NE(S, nullptr);
   EXPECT_TRUE(S->canModify());
   EXPECT_FALSE(S->isOriginal());
   EXPECT_TRUE(S->isDetached());
 }
 
 INSTANTIATE_TEST_CASE_P(SyntaxTreeTests, SyntaxTreeTest,
-                        testing::ValuesIn(TestClangConfig::allConfigs()));
+                        testing::ValuesIn(TestClangConfig::allConfigs()), );
 
 } // namespace