Fix vbtable indices when a class shares the vbptr with a non-virtual base

llvm-svn: 194082
diff --git a/clang/lib/CodeGen/CGRTTI.cpp b/clang/lib/CodeGen/CGRTTI.cpp
index 72d4220..aa687b9 100644
--- a/clang/lib/CodeGen/CGRTTI.cpp
+++ b/clang/lib/CodeGen/CGRTTI.cpp
@@ -846,7 +846,7 @@
     CharUnits Offset;
     if (Base->isVirtual())
       Offset = 
-        CGM.getVTableContext().getVirtualBaseOffsetOffset(RD, BaseDecl);
+        CGM.getItaniumVTableContext().getVirtualBaseOffsetOffset(RD, BaseDecl);
     else {
       const ASTRecordLayout &Layout = CGM.getContext().getASTRecordLayout(RD);
       Offset = Layout.getBaseClassOffset(BaseDecl);