Update ImplicitCastExpr to be able to represent an XValue.

llvm-svn: 108807
diff --git a/clang/lib/Frontend/PCHReaderStmt.cpp b/clang/lib/Frontend/PCHReaderStmt.cpp
index 051b225..03df4d7 100644
--- a/clang/lib/Frontend/PCHReaderStmt.cpp
+++ b/clang/lib/Frontend/PCHReaderStmt.cpp
@@ -588,7 +588,7 @@
 
 void PCHStmtReader::VisitImplicitCastExpr(ImplicitCastExpr *E) {
   VisitCastExpr(E);
-  E->setLvalueCast(Record[Idx++]);
+  E->setCategory(static_cast<ImplicitCastExpr::ResultCategory>(Record[Idx++]));
 }
 
 void PCHStmtReader::VisitExplicitCastExpr(ExplicitCastExpr *E) {