Let SourceManager::getBufferData return StringRef instead of a pair of two const char*.

llvm-svn: 98630

clang/lib/Rewrite/HTMLRewrite.cpp

@@ -44,7 +44,7 @@ void html::HighlightRange(Rewriter &R, SourceLocation B, SourceLocation E,
   EOffset += Lexer::MeasureTokenLength(E, R.getSourceMgr(), R.getLangOpts());
 
   bool Invalid = false;
-  const char *BufferStart = SM.getBufferData(FID, &Invalid).first;
+  const char *BufferStart = SM.getBufferData(FID, &Invalid).data();
   if (Invalid)
     return;