Add newline at the end of file, to silence compiler warning.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57818 91177308-0d34-0410-b5e6-96231b3b80d8

Driver/RewriteTest.cpp

@@ -37,4 +37,4 @@ void clang::DoRewriteTest(Preprocessor &PP, const std::string &InFileName,
   for (TokenRewriter::token_iterator I = Rewriter.token_begin(),
        E = Rewriter.token_end(); I != E; ++I)
     std::cout << PP.getSpelling(*I);
-}
+}