Check that the function being overridden is virtual.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71802 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PCHWriterDecl.cpp b/lib/Frontend/PCHWriterDecl.cpp
index 48c7dc2..5d08334 100644
--- a/lib/Frontend/PCHWriterDecl.cpp
+++ b/lib/Frontend/PCHWriterDecl.cpp
@@ -149,7 +149,7 @@
   Record.push_back(D->getStorageClass()); // FIXME: stable encoding
   Record.push_back(D->isInline());
   Record.push_back(D->isC99InlineDefinition());
-  Record.push_back(D->isVirtual());
+  Record.push_back(D->isVirtualAsWritten());
   Record.push_back(D->isPure());
   Record.push_back(D->hasInheritedPrototype());
   Record.push_back(D->hasWrittenPrototype());