Convert the remaining statement parsers to smart pointers.

llvm-svn: 60895
diff --git a/clang/lib/Parse/ParseStmt.cpp b/clang/lib/Parse/ParseStmt.cpp
index ff9f6e3..35306a1 100644
--- a/clang/lib/Parse/ParseStmt.cpp
+++ b/clang/lib/Parse/ParseStmt.cpp
@@ -86,7 +86,7 @@
   case tok::at: // May be a @try or @throw statement
     {
       AtLoc = ConsumeToken();  // consume @
-      return Owned(ParseObjCAtStatement(AtLoc));
+      return ParseObjCAtStatement(AtLoc);
     }
 
   case tok::identifier: