Added writing and reading of the ConstQualAdded flag of
BlockDeclRefExpr to PCH.

llvm-svn: 73800
diff --git a/clang/lib/Frontend/PCHReaderStmt.cpp b/clang/lib/Frontend/PCHReaderStmt.cpp
index e6871e3..d096388 100644
--- a/clang/lib/Frontend/PCHReaderStmt.cpp
+++ b/clang/lib/Frontend/PCHReaderStmt.cpp
@@ -667,6 +667,7 @@
   E->setDecl(cast<ValueDecl>(Reader.GetDecl(Record[Idx++])));
   E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
   E->setByRef(Record[Idx++]);
+  E->setConstQualAdded(Record[Idx++]);
   return 0;
 }