Change ASTUnit to take the Diagnostic as an argument, the client should have control of this.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82430 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/CIndex/CIndex.cpp b/tools/CIndex/CIndex.cpp
index 55bcd93..de50b80 100644
--- a/tools/CIndex/CIndex.cpp
+++ b/tools/CIndex/CIndex.cpp
@@ -206,7 +206,8 @@
   std::string astName(ast_filename);
   std::string ErrMsg;
   
-  return ASTUnit::LoadFromPCHFile(astName, CXXIdx->getFileManager(), &ErrMsg);
+  return ASTUnit::LoadFromPCHFile(astName, CXXIdx->getDiagnostics(),
+                                  CXXIdx->getFileManager(), &ErrMsg);
 }
 
 void clang_disposeTranslationUnit(