Remove the last of the old-style Preprocessor::Diag methods.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59554 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/PreprocessorLexer.cpp b/lib/Lex/PreprocessorLexer.cpp
index 3c5d81b..20bce41 100644
--- a/lib/Lex/PreprocessorLexer.cpp
+++ b/lib/Lex/PreprocessorLexer.cpp
@@ -24,7 +24,7 @@
                              const std::string &Msg) const {
   if (LexingRawMode && Diagnostic::isBuiltinNoteWarningOrExtension(DiagID))
     return;
-  PP->Diag(Loc, DiagID, Msg);
+  PP->Diag(Loc, DiagID) << Msg;
 }
 
 /// LexIncludeFilename - After the preprocessor has parsed a #include, lex and