Convert a big bunch of expression parsers to use smart pointers.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60906 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/ParseObjc.cpp b/lib/Parse/ParseObjc.cpp
index 50d6af9..1966512 100644
--- a/lib/Parse/ParseObjc.cpp
+++ b/lib/Parse/ParseObjc.cpp
@@ -1567,7 +1567,7 @@
 }
 
 Parser::ExprResult Parser::ParseObjCStringLiteral(SourceLocation AtLoc) {
-  OwningExprResult Res(Actions, ParseStringLiteralExpression());
+  OwningExprResult Res(ParseStringLiteralExpression());
   if (Res.isInvalid()) return Res.result();
   
   // @"foo" @"bar" is a valid concatenated string.  Eat any subsequent string