Convert some more expression parsers to use smart pointers.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60904 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/ParseObjc.cpp b/lib/Parse/ParseObjc.cpp
index 83ab371..50d6af9 100644
--- a/lib/Parse/ParseObjc.cpp
+++ b/lib/Parse/ParseObjc.cpp
@@ -1380,7 +1380,7 @@
     return ParseObjCThrowStmt(AtLoc);
   else if (Tok.isObjCAtKeyword(tok::objc_synchronized))
     return ParseObjCSynchronizedStmt(AtLoc);
-  OwningExprResult Res(Actions, ParseExpressionWithLeadingAt(AtLoc));
+  OwningExprResult Res(ParseExpressionWithLeadingAt(AtLoc));
   if (Res.isInvalid()) {
     // If the expression is invalid, skip ahead to the next semicolon. Not
     // doing this opens us up to the possibility of infinite loops if