Fix formatting regression introduced by r174307.

In preprocessor definitions, we would not parse all the tokens and thus
not annotate them anymore. This led to a wrong formatting of comments
in google style:

  #endif // HEADER_GUARD  -- requires two spaces

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174361 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index 5b99716..f5606cb 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -479,6 +479,8 @@
 
   verifyFormat("someFunction(anotherFunction( // Force break.\n"
                "    parameter));");
+
+  verifyGoogleFormat("#endif  // HEADER_GUARD");
 }
 
 TEST_F(FormatTest, UnderstandsMultiLineComments) {