[DiagnosticPrinter] Use the appropriate method to print a Twine objec…

…t in a

raw_ostream.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197531 91177308-0d34-0410-b5e6-96231b3b80d8

lib/IR/DiagnosticPrinter.cpp

@@ -90,7 +90,7 @@ DiagnosticPrinter &DiagnosticPrinterRawOStream::operator<<(double N) {
 }
 
 DiagnosticPrinter &DiagnosticPrinterRawOStream::operator<<(const Twine &Str) {
-  Stream << Str.getSingleStringRef();
+  Str.print(Stream);
   return *this;
 }