Replace more release+static_cast with takeAs.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70567 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplateInstantiateDecl.cpp b/lib/Sema/SemaTemplateInstantiateDecl.cpp
index d7e8112..62c717b 100644
--- a/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -171,7 +171,7 @@
       Invalid = true;
       BitWidth = 0;
     } else
-      BitWidth = (Expr *)InstantiatedBitWidth.release();
+      BitWidth = InstantiatedBitWidth.takeAs<Expr>();
   }
 
   FieldDecl *Field = SemaRef.CheckFieldDecl(D->getDeclName(), T,