[PyTorch] Use std::move() in a couple places in function_schema_parser.cpp (pytorch#66114)

Summary:
Pull Request resolved: pytorch#66114

ghstack-source-id: 139712533

Test Plan: Build

Reviewed By: swolchok

Differential Revision: D31387502

fbshipit-source-id: e850cb7df397a7c5b31df995b23ad6e5c004ac86

Author: dhruvbird

torch/csrc/jit/frontend/function_schema_parser.cpp

@@ -334,15 +334,15 @@ C10_EXPORT FunctionSchema parseSchema(const std::string& schema) {
   TORCH_CHECK(
       parsed.is_right(),
       "Tried to parse a function schema but only the operator name was given");
-  return parsed.right();
+  return std::move(parsed.right());
 }
 
 C10_EXPORT OperatorName parseName(const std::string& name) {
   auto parsed = parseSchemaOrName(name);
   TORCH_CHECK(
       parsed.is_left(),
       "Tried to parse an operator name but function schema was given");
-  return parsed.left();
+  return std::move(parsed.left());
 }
 
 } // namespace jit