Patch for code gen. for c-style cast which ends in
using class's conversion functions [12.3.2-p2]


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@80433 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaExprCXX.cpp b/lib/Sema/SemaExprCXX.cpp
index fe67ec6..16e83e6 100644
--- a/lib/Sema/SemaExprCXX.cpp
+++ b/lib/Sema/SemaExprCXX.cpp
@@ -939,6 +939,7 @@
         OwningExprResult InitResult = 
           BuildCXXConstructExpr(ToType.getNonReferenceType(), 
                                 CD, &From, 1);
+        // Take ownership of this expression.
         From = InitResult.takeAs<Expr>();
         CastKind = CastExpr::CK_ConstructorConversion ;
       }