Some utilities for using the smart pointers in Actions, especially Sema. Convert a few functions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60983 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/ParseObjc.cpp b/lib/Parse/ParseObjc.cpp
index 994e783..5f2ebad 100644
--- a/lib/Parse/ParseObjc.cpp
+++ b/lib/Parse/ParseObjc.cpp
@@ -1364,12 +1364,12 @@
   // If the function body could not be parsed, make a bogus compoundstmt.
   if (FnBody.isInvalid())
     FnBody = Actions.ActOnCompoundStmt(BraceLoc, BraceLoc, 0, 0, false);
-  
+
   // Leave the function body scope.
   BodyScope.Exit();
-  
+
   // TODO: Pass argument information.
-  Actions.ActOnFinishFunctionBody(MDecl, FnBody.release());
+  Actions.ActOnFinishFunctionBody(MDecl, move_convert(FnBody));
   return MDecl;
 }