Add missing newline at end of file

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@361708 91177308-0d34-0410-b5e6-96231b3b80d8

unittests/Tooling/Syntax/TokensTest.cpp

@@ -651,4 +651,4 @@ TEST_F(TokenBufferTest, TokensToFileRange) {
   // We don't test assertion failures because death tests are slow.
 }
 
-} // namespace
+} // namespace